diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Principal.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Principal.cs
new file mode 100644
index 00000000..a803f6c2
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Principal.cs
@@ -0,0 +1,63 @@
+namespace LEGO.AsyncAPI.Bindings.Sns;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using LEGO.AsyncAPI.Models.Interfaces;
+using LEGO.AsyncAPI.Readers.ParseNodes;
+using LEGO.AsyncAPI.Writers;
+
+public abstract class Principal : IAsyncApiElement
+{
+    public abstract void Serialize(IAsyncApiWriter writer);
+
+    public static Principal Parse(ParseNode node)
+    {
+        switch (node)
+        {
+            case ValueNode:
+                var nodeValue = node.GetScalarValue();
+                if (!IsStarString(nodeValue))
+                {
+                    throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                                $"Principal value without a property name can only be a string value of '*'.");
+                }
+
+                return new PrincipalStar();
+
+            case MapNode mapNode:
+            {
+                var propertyNode = mapNode.First();
+                if (!IsValidPrincipalProperty(propertyNode.Name))
+                {
+                    throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                                $"Node should contain a valid AWS principal property name.");
+                }
+
+                var principalValue = new KeyValuePair<string, StringOrStringList>(
+                    propertyNode.Name,
+                    StringOrStringList.Parse(propertyNode.Value));
+
+                return new PrincipalObject(principalValue);
+            }
+
+            default:
+                throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                            $"Node should contain a string value of '*' or a valid AWS principal property.");
+        }
+    }
+
+    private static bool IsStarString(JsonNode value)
+    {
+        var element = JsonDocument.Parse(value.ToJsonString()).RootElement;
+
+        return element.ValueKind == JsonValueKind.String && element.ValueEquals("*");
+    }
+
+    private static bool IsValidPrincipalProperty(string property)
+    {
+        return new[] { "AWS", "Service" }.Contains(property);
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalObject.cs b/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalObject.cs
new file mode 100644
index 00000000..a25c198f
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalObject.cs
@@ -0,0 +1,27 @@
+namespace LEGO.AsyncAPI.Bindings.Sns;
+
+using System;
+using System.Collections.Generic;
+using LEGO.AsyncAPI.Writers;
+
+public class PrincipalObject : Principal
+{
+    private KeyValuePair<string, StringOrStringList> PrincipalValue;
+
+    public PrincipalObject(KeyValuePair<string, StringOrStringList> principalValue)
+    {
+        this.PrincipalValue = principalValue;
+    }
+
+    public override void Serialize(IAsyncApiWriter writer)
+    {
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+
+        writer.WriteStartObject();
+        writer.WriteRequiredObject(this.PrincipalValue.Key, this.PrincipalValue.Value, (w, t) => t.Value.Write(w));
+        writer.WriteEndObject();
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalStar.cs b/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalStar.cs
new file mode 100644
index 00000000..533e9fb7
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/PrincipalStar.cs
@@ -0,0 +1,24 @@
+namespace LEGO.AsyncAPI.Bindings.Sns;
+
+using System;
+using LEGO.AsyncAPI.Writers;
+
+public class PrincipalStar : Principal
+{
+    private string PrincipalValue;
+
+    public PrincipalStar()
+    {
+        this.PrincipalValue = "*";
+    }
+
+    public override void Serialize(IAsyncApiWriter writer)
+    {
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+
+        writer.WriteValue(this.PrincipalValue);
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
index 13676168..4d8668c9 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
@@ -57,8 +57,10 @@ public class SnsChannelBinding : ChannelBinding<SnsChannelBinding>
         private static FixedFieldMap<Statement> statementFixedFields = new()
         {
             { "effect", (a, n) => { a.Effect = n.GetScalarValue().GetEnumFromDisplayName<Effect>(); } },
-            { "principal", (a, n) => { a.Principal = StringOrStringList.Parse(n); } },
+            { "principal", (a, n) => { a.Principal = Principal.Parse(n); } },
             { "action", (a, n) => { a.Action = StringOrStringList.Parse(n); } },
+            { "resource", (a, n) => { a.Resource = StringOrStringList.Parse(n); } },
+            { "condition", (a, n) => { a.Condition = n.CreateAny(); } },
         };
 
         /// <inheritdoc/>
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
index 7f3771f0..170fe371 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
@@ -1,28 +1,40 @@
 // Copyright (c) The LEGO Group. All rights reserved.
-
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
     using System.Collections.Generic;
     using LEGO.AsyncAPI.Attributes;
+    using LEGO.AsyncAPI.Models;
     using LEGO.AsyncAPI.Models.Interfaces;
     using LEGO.AsyncAPI.Writers;
 
     public class Statement : IAsyncApiExtensible
     {
+        /// <summary>
+        /// Indicates whether the policy allows or denies access.
+        /// </summary>
         public Effect Effect { get; set; }
 
         /// <summary>
-        /// The AWS account or resource ARN that this statement applies to.
+        /// The AWS account(s) or resource ARN(s) that this statement applies to.
         /// </summary>
-        // public StringOrStringList Principal { get; set; }
-        public StringOrStringList Principal { get; set; }
+        public Principal Principal { get; set; }
 
         /// <summary>
-        /// The SNS permission being allowed or denied e.g. sns:Publish
+        /// The SNS permission being allowed or denied e.g. sns:Publish.
         /// </summary>
         public StringOrStringList Action { get; set; }
 
+        /// <summary>
+        /// The resource(s) that this policy applies to.
+        /// </summary>
+        public StringOrStringList? Resource { get; set; }
+
+        /// <summary>
+        /// Specific circumstances under which the policy grants permission.
+        /// </summary>
+        public AsyncApiAny? Condition { get; set; }
+
         public IDictionary<string, IAsyncApiExtension> Extensions { get; set; } = new Dictionary<string, IAsyncApiExtension>();
 
         public void Serialize(IAsyncApiWriter writer)
@@ -34,8 +46,10 @@ public void Serialize(IAsyncApiWriter writer)
 
             writer.WriteStartObject();
             writer.WriteRequiredProperty("effect", this.Effect.GetDisplayName());
-            writer.WriteRequiredObject("principal", this.Principal, (w, t) => t.Value.Write(w));
+            writer.WriteRequiredObject("principal", this.Principal, (w, t) => t.Serialize(w));
             writer.WriteRequiredObject("action", this.Action, (w, t) => t.Value.Write(w));
+            writer.WriteOptionalObject("resource", this.Resource, (w, t) => t?.Value.Write(w));
+            writer.WriteOptionalObject("condition", this.Condition, (w, t) => t?.Write(w));
             writer.WriteExtensions(this.Extensions);
             writer.WriteEndObject();
         }
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Principal.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Principal.cs
new file mode 100644
index 00000000..2821f952
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Principal.cs
@@ -0,0 +1,65 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
+namespace LEGO.AsyncAPI.Bindings.Sqs;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using LEGO.AsyncAPI.Models.Interfaces;
+using LEGO.AsyncAPI.Readers.ParseNodes;
+using LEGO.AsyncAPI.Writers;
+
+public abstract class Principal : IAsyncApiElement
+{
+    public abstract void Serialize(IAsyncApiWriter writer);
+
+    public static Principal Parse(ParseNode node)
+    {
+        switch (node)
+        {
+            case ValueNode:
+                var nodeValue = node.GetScalarValue();
+                if (!IsStarString(nodeValue))
+                {
+                    throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                                $"Principal value without a property name can only be a string value of '*'.");
+                }
+
+                return new PrincipalStar();
+
+            case MapNode mapNode:
+            {
+                var propertyNode = mapNode.First();
+                if (!IsValidPrincipalProperty(propertyNode.Name))
+                {
+                    throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                                $"Node should contain a valid AWS principal property name.");
+                }
+
+                var principalValue = new KeyValuePair<string, StringOrStringList>(
+                    propertyNode.Name,
+                    StringOrStringList.Parse(propertyNode.Value));
+
+                return new PrincipalObject(principalValue);
+            }
+
+            default:
+                throw new ArgumentException($"An error occured while parsing a {nameof(Principal)} node. " +
+                                            $"Node should contain a string value of '*' or a valid AWS principal property.");
+        }
+    }
+
+    private static bool IsStarString(JsonNode value)
+    {
+        var element = JsonDocument.Parse(value.ToJsonString()).RootElement;
+
+        return element.ValueKind == JsonValueKind.String && element.ValueEquals("*");
+    }
+
+    private static bool IsValidPrincipalProperty(string property)
+    {
+        return new[] { "AWS", "Service" }.Contains(property);
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalObject.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalObject.cs
new file mode 100644
index 00000000..2652060d
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalObject.cs
@@ -0,0 +1,27 @@
+namespace LEGO.AsyncAPI.Bindings.Sqs;
+
+using System;
+using System.Collections.Generic;
+using LEGO.AsyncAPI.Writers;
+
+public class PrincipalObject : Principal
+{
+    private KeyValuePair<string, StringOrStringList> PrincipalValue;
+
+    public PrincipalObject(KeyValuePair<string, StringOrStringList> principalValue)
+    {
+        this.PrincipalValue = principalValue;
+    }
+
+    public override void Serialize(IAsyncApiWriter writer)
+    {
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+
+        writer.WriteStartObject();
+        writer.WriteRequiredObject(this.PrincipalValue.Key, this.PrincipalValue.Value, (w, t) => t.Value.Write(w));
+        writer.WriteEndObject();
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalStar.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalStar.cs
new file mode 100644
index 00000000..9e54bc5a
--- /dev/null
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/PrincipalStar.cs
@@ -0,0 +1,24 @@
+namespace LEGO.AsyncAPI.Bindings.Sqs;
+
+using System;
+using LEGO.AsyncAPI.Writers;
+
+public class PrincipalStar : Principal
+{
+    private string PrincipalValue;
+
+    public PrincipalStar()
+    {
+        this.PrincipalValue = "*";
+    }
+
+    public override void Serialize(IAsyncApiWriter writer)
+    {
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+
+        writer.WriteValue(this.PrincipalValue);
+    }
+}
\ No newline at end of file
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
index 6f98da99..f0b24be7 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
@@ -64,8 +64,10 @@ public class SqsChannelBinding : ChannelBinding<SqsChannelBinding>
         private static FixedFieldMap<Statement> statementFixedFields = new()
         {
             { "effect", (a, n) => { a.Effect = n.GetScalarValue().GetEnumFromDisplayName<Effect>(); } },
-            { "principal", (a, n) => { a.Principal = StringOrStringList.Parse(n); } },
+            { "principal", (a, n) => { a.Principal = Principal.Parse(n); } },
             { "action", (a, n) => { a.Action = StringOrStringList.Parse(n); } },
+            { "resource", (a, n) => { a.Resource = StringOrStringList.Parse(n); } },
+            { "condition", (a, n) => { a.Condition = n.CreateAny(); } },
         };
 
         public override void SerializeProperties(IAsyncApiWriter writer)
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
index d8eb43dd..ed278013 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
@@ -56,8 +56,10 @@ public class SqsOperationBinding : OperationBinding<SqsOperationBinding>
         private static FixedFieldMap<Statement> statementFixedFields = new()
         {
             { "effect", (a, n) => { a.Effect = n.GetScalarValue().GetEnumFromDisplayName<Effect>(); } },
-            { "principal", (a, n) => { a.Principal = StringOrStringList.Parse(n); } },
+            { "principal", (a, n) => { a.Principal = Principal.Parse(n); } },
             { "action", (a, n) => { a.Action = StringOrStringList.Parse(n); } },
+            { "resource", (a, n) => { a.Resource = StringOrStringList.Parse(n); } },
+            { "condition", (a, n) => { a.Condition = n.CreateAny(); } },
         };
 
         public override void SerializeProperties(IAsyncApiWriter writer)
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
index 9518d2d4..4abc05a6 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
@@ -5,24 +5,37 @@ namespace LEGO.AsyncAPI.Bindings.Sqs
     using System;
     using System.Collections.Generic;
     using LEGO.AsyncAPI.Attributes;
+    using LEGO.AsyncAPI.Models;
     using LEGO.AsyncAPI.Models.Interfaces;
     using LEGO.AsyncAPI.Writers;
 
     public class Statement : IAsyncApiExtensible
     {
+        /// <summary>
+        /// Indicates whether the policy allows or denies access.
+        /// </summary>
         public Effect Effect { get; set; }
 
         /// <summary>
-        /// The AWS account or resource ARN that this statement applies to.
+        /// The AWS account(s) or resource ARN(s) that this statement applies to.
         /// </summary>
-        // public StringOrStringList Principal { get; set; }
-        public StringOrStringList Principal { get; set; }
+        public Principal Principal { get; set; }
 
         /// <summary>
-        /// The SNS permission being allowed or denied e.g. sns:Publish
+        /// The SNS permission being allowed or denied e.g. sns:Publish.
         /// </summary>
         public StringOrStringList Action { get; set; }
 
+        /// <summary>
+        /// The resource(s) that this policy applies to.
+        /// </summary>
+        public StringOrStringList? Resource { get; set; }
+
+        /// <summary>
+        /// Specific circumstances under which the policy grants permission.
+        /// </summary>
+        public AsyncApiAny? Condition { get; set; }
+
         public IDictionary<string, IAsyncApiExtension> Extensions { get; set; } = new Dictionary<string, IAsyncApiExtension>();
 
         public void Serialize(IAsyncApiWriter writer)
@@ -34,8 +47,10 @@ public void Serialize(IAsyncApiWriter writer)
 
             writer.WriteStartObject();
             writer.WriteRequiredProperty("effect", this.Effect.GetDisplayName());
-            writer.WriteRequiredObject("principal", this.Principal, (w, t) => t.Value.Write(w));
+            writer.WriteRequiredObject("principal", this.Principal, (w, t) => t.Serialize(w));
             writer.WriteRequiredObject("action", this.Action, (w, t) => t.Value.Write(w));
+            writer.WriteOptionalObject("resource", this.Resource, (w, t) => t?.Value.Write(w));
+            writer.WriteOptionalObject("condition", this.Condition, (w, t) => t?.Write(w));
             writer.WriteExtensions(this.Extensions);
             writer.WriteEndObject();
         }
diff --git a/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs b/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
index 6be69094..b9946f08 100644
--- a/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
+++ b/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
@@ -30,10 +30,10 @@ public static StringOrStringList Parse(ParseNode node)
             {
                 case ValueNode:
                     return new StringOrStringList(new AsyncApiAny(node.GetScalarValue()));
-                case ListNode:
+                case ListNode listNode:
                     {
                         var jsonArray = new JsonArray();
-                        foreach (var item in node as ListNode)
+                        foreach (var item in listNode)
                         {
                             jsonArray.Add(item.GetScalarValue());
                         }
diff --git a/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs b/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
index 6d4f5779..fbb3622e 100644
--- a/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
@@ -31,15 +31,24 @@ public void SnsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                     policy:
                       statements:
                         - effect: Deny
-                          principal: arn:aws:iam::123456789012:user/alex.wichmann
+                          principal: '*'
                           action:
                             - sns:Publish
                             - sns:Delete
+                          condition:
+                            StringEquals:
+                              aws:username:
+                                - johndoe
+                                - mrsmith
                         - effect: Allow
                           principal:
-                            - arn:aws:iam::123456789012:user/alex.wichmann
-                            - arn:aws:iam::123456789012:user/dec.kolakowski
+                            AWS:
+                              - arn:aws:iam::123456789012:user/alex.wichmann
+                              - arn:aws:iam::123456789012:user/dec.kolakowski
                           action: sns:Create
+                          condition:
+                            NumericLessThanEquals:
+                              aws:MultiFactorAuthAge: '3600'
                           x-statementExtension:
                             statementXPropertyName: statementXPropertyValue
                       x-policyExtension:
@@ -77,22 +86,38 @@ public void SnsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                         new Statement()
                         {
                             Effect = Effect.Deny,
-                            Principal = new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")),
+                            Principal = new PrincipalStar(),
                             Action = new StringOrStringList(new AsyncApiAny(new List<string>()
                             {
                                 "sns:Publish",
                                 "sns:Delete",
                             })),
+                            Condition = new AsyncApiAny(new Dictionary<string, object>()
+                            {
+                                {
+                                    "StringEquals", new Dictionary<string, List<string>>()
+                                    {
+                                        { "aws:username", new List<string>() { "johndoe", "mrsmith" } },
+                                    }
+                                },
+                            }),
                         },
                         new Statement()
                         {
                             Effect = Effect.Allow,
-                            Principal = new StringOrStringList(new AsyncApiAny(new List<string>()
-                            {
-                                "arn:aws:iam::123456789012:user/alex.wichmann",
-                                "arn:aws:iam::123456789012:user/dec.kolakowski",
-                            })),
+                            Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                "AWS", new StringOrStringList(new AsyncApiAny(new List<string>
+                                    { "arn:aws:iam::123456789012:user/alex.wichmann", "arn:aws:iam::123456789012:user/dec.kolakowski" })))),
                             Action = new StringOrStringList(new AsyncApiAny("sns:Create")),
+                            Condition = new AsyncApiAny(new Dictionary<string, object>()
+                            {
+                                {
+                                    "NumericLessThanEquals", new Dictionary<string, string>()
+                                    {
+                                        { "aws:MultiFactorAuthAge", "3600" },
+                                    }
+                                },
+                            }),
                             Extensions = new Dictionary<string, IAsyncApiExtension>()
                             {
                                 {
@@ -137,8 +162,11 @@ public void SnsChannelBinding_WithFilledObject_SerializesAndDeserializes()
             var actual = channel.SerializeAsYaml(AsyncApiVersion.AsyncApi2_0);
 
             // Assert
-            var settings = new AsyncApiReaderSettings();
-            settings.Bindings = BindingsCollection.Sns;
+            var settings = new AsyncApiReaderSettings
+            {
+                Bindings = BindingsCollection.Sns,
+            };
+
             var binding = new AsyncApiStringReader(settings).ReadFragment<AsyncApiChannel>(actual, AsyncApiVersion.AsyncApi2_0, out _);
 
             // Assert
@@ -381,8 +409,11 @@ public void SnsOperationBinding_WithFilledObject_SerializesAndDeserializes()
             var actual = operation.SerializeAsYaml(AsyncApiVersion.AsyncApi2_0);
 
             // Assert
-            var settings = new AsyncApiReaderSettings();
-            settings.Bindings = BindingsCollection.Sns;
+            var settings = new AsyncApiReaderSettings
+            {
+                Bindings = BindingsCollection.Sns,
+            };
+
             var binding = new AsyncApiStringReader(settings).ReadFragment<AsyncApiOperation>(actual, AsyncApiVersion.AsyncApi2_0, out _);
             var binding2 = new AsyncApiStringReader(settings).ReadFragment<AsyncApiOperation>(expected, AsyncApiVersion.AsyncApi2_0, out _);
             binding2.Bindings.First().Value.Extensions.TryGetValue("x-bindingExtension", out IAsyncApiExtension any);
diff --git a/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs b/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
index c031621c..3a0337a3 100644
--- a/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
@@ -3,6 +3,7 @@
 namespace LEGO.AsyncAPI.Tests.Bindings.Sqs
 {
     using System.Collections.Generic;
+    using System.Linq;
     using FluentAssertions;
     using LEGO.AsyncAPI.Bindings;
     using LEGO.AsyncAPI.Bindings.Sqs;
@@ -42,17 +43,27 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                       policy:
                         statements:
                           - effect: deny
-                            principal: arn:aws:iam::123456789012:user/alex.wichmann
+                            principal:
+                              AWS: arn:aws:iam::123456789012:user/alex.wichmann
                             action:
                               - sqs:SendMessage
                               - sqs:ReceiveMessage
+                            condition:
+                              StringEquals:
+                                aws:username:
+                                  - johndoe
+                                  - mrsmith
                             x-statementExtension:
                               statementXPropertyName: statementXPropertyValue
                           - effect: allow
                             principal:
-                              - arn:aws:iam::123456789012:user/alex.wichmann
-                              - arn:aws:iam::123456789012:user/dec.kolakowski
+                              AWS:
+                                - arn:aws:iam::123456789012:user/alex.wichmann
+                                - arn:aws:iam::123456789012:user/dec.kolakowski
                             action: sqs:CreateQueue
+                            condition:
+                              NumericLessThanEquals:
+                                aws:MultiFactorAuthAge: '3600'
                         x-policyExtension:
                           policyXPropertyName: policyXPropertyValue
                       tags:
@@ -69,7 +80,8 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                       policy:
                         statements:
                           - effect: allow
-                            principal: arn:aws:iam::123456789012:user/alex.wichmann
+                            principal:
+                              Service: s3.amazonaws.com
                             action:
                               - sqs:*
                     x-internalObject:
@@ -124,12 +136,22 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                             new Statement()
                             {
                                 Effect = Effect.Deny,
-                                Principal = new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")),
+                                Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                    "AWS", new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")))),
                                 Action = new StringOrStringList(new AsyncApiAny(new List<string>
                                 {
                                     "sqs:SendMessage",
                                     "sqs:ReceiveMessage",
                                 })),
+                                Condition = new AsyncApiAny(new Dictionary<string, object>()
+                                {
+                                    {
+                                        "StringEquals", new Dictionary<string, List<string>>()
+                                        {
+                                            { "aws:username", new List<string>() { "johndoe", "mrsmith" } },
+                                        }
+                                    },
+                                }),
                                 Extensions = new Dictionary<string, IAsyncApiExtension>()
                                 {
                                     {
@@ -144,12 +166,19 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                             new Statement()
                             {
                                 Effect = Effect.Allow,
-                                Principal = new StringOrStringList(new AsyncApiAny(new List<string>
-                                {
-                                        "arn:aws:iam::123456789012:user/alex.wichmann",
-                                        "arn:aws:iam::123456789012:user/dec.kolakowski",
-                                })),
+                                Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                    "AWS", new StringOrStringList(new AsyncApiAny(new List<string>
+                                        { "arn:aws:iam::123456789012:user/alex.wichmann", "arn:aws:iam::123456789012:user/dec.kolakowski" })))),
                                 Action = new StringOrStringList(new AsyncApiAny("sqs:CreateQueue")),
+                                Condition = new AsyncApiAny(new Dictionary<string, object>()
+                                {
+                                    {
+                                        "NumericLessThanEquals", new Dictionary<string, string>()
+                                        {
+                                            { "aws:MultiFactorAuthAge", "3600" },
+                                        }
+                                    },
+                                }),
                             },
                         },
                         Extensions = new Dictionary<string, IAsyncApiExtension>()
@@ -194,7 +223,8 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
                             new Statement()
                             {
                                 Effect = Effect.Allow,
-                                Principal = new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")),
+                                Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                    "Service", new StringOrStringList(new AsyncApiAny("s3.amazonaws.com")))),
                                 Action = new StringOrStringList(new AsyncApiAny(new List<string>
                                 {
                                     "sqs:*",
@@ -218,8 +248,10 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
             var actual = channel.SerializeAsYaml(AsyncApiVersion.AsyncApi2_0);
 
             // Assert
-            var settings = new AsyncApiReaderSettings();
-            settings.Bindings = BindingsCollection.Sqs;
+            var settings = new AsyncApiReaderSettings
+            {
+                Bindings = BindingsCollection.Sqs,
+            };
             var binding =
                 new AsyncApiStringReader(settings).ReadFragment<AsyncApiChannel>(actual, AsyncApiVersion.AsyncApi2_0, out _);
 
@@ -227,6 +259,9 @@ public void SqsChannelBinding_WithFilledObject_SerializesAndDeserializes()
             actual.Should()
                   .BePlatformAgnosticEquivalentTo(expected);
             binding.Should().BeEquivalentTo(channel);
+
+            var expectedSqsBinding = (SqsChannelBinding)channel.Bindings.Values.First();
+            expectedSqsBinding.Should().BeEquivalentTo((SqsChannelBinding)binding.Bindings.Values.First(), options => options.IgnoringCyclicReferences());
         }
 
         [Test]
@@ -254,7 +289,8 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                         policy:
                           statements:
                             - effect: deny
-                              principal: arn:aws:iam::123456789012:user/alex.wichmann
+                              principal:
+                                AWS: arn:aws:iam::123456789012:user/alex.wichmann
                               action:
                                 - sqs:SendMessage
                                 - sqs:ReceiveMessage
@@ -262,8 +298,9 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                                 statementXPropertyName: statementXPropertyValue
                             - effect: allow
                               principal:
-                                - arn:aws:iam::123456789012:user/alex.wichmann
-                                - arn:aws:iam::123456789012:user/dec.kolakowski
+                                AWS:
+                                  - arn:aws:iam::123456789012:user/alex.wichmann
+                                  - arn:aws:iam::123456789012:user/dec.kolakowski
                               action: sqs:CreateQueue
                           x-policyExtension:
                             policyXPropertyName: policyXPropertyValue
@@ -280,7 +317,8 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                         policy:
                           statements:
                             - effect: allow
-                              principal: arn:aws:iam::123456789012:user/alex.wichmann
+                              principal:
+                                AWS: arn:aws:iam::123456789012:user/alex.wichmann
                               action:
                                 - sqs:*
                         x-queueExtension:
@@ -339,7 +377,8 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                                 new Statement()
                                 {
                                     Effect = Effect.Deny,
-                                    Principal = new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")),
+                                    Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                        "AWS", new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")))),
                                     Action = new StringOrStringList(new AsyncApiAny(new List<string>()
                                     {
                                         "sqs:SendMessage",
@@ -359,11 +398,9 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                                 new Statement()
                                 {
                                     Effect = Effect.Allow,
-                                    Principal = new StringOrStringList(new AsyncApiAny(new List<string>
-                                    {
-                                        "arn:aws:iam::123456789012:user/alex.wichmann",
-                                        "arn:aws:iam::123456789012:user/dec.kolakowski",
-                                    })),
+                                    Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                        "AWS", new StringOrStringList(new AsyncApiAny(new List<string>
+                                            { "arn:aws:iam::123456789012:user/alex.wichmann", "arn:aws:iam::123456789012:user/dec.kolakowski" })))),
                                     Action = new StringOrStringList(new AsyncApiAny("sqs:CreateQueue")),
                                 },
                             },
@@ -409,7 +446,8 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
                                 new Statement()
                                 {
                                     Effect = Effect.Allow,
-                                    Principal = new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")),
+                                    Principal = new PrincipalObject(new KeyValuePair<string, StringOrStringList>(
+                                        "AWS", new StringOrStringList(new AsyncApiAny("arn:aws:iam::123456789012:user/alex.wichmann")))),
                                     Action = new StringOrStringList(new AsyncApiAny(new List<string>
                                     {
                                         "sqs:*",
@@ -444,14 +482,20 @@ public void SqsOperationBinding_WithFilledObject_SerializesAndDeserializes()
             var actual = operation.SerializeAsYaml(AsyncApiVersion.AsyncApi2_0);
 
             // Assert
-            var settings = new AsyncApiReaderSettings();
-            settings.Bindings = BindingsCollection.Sqs;
+            var settings = new AsyncApiReaderSettings
+            {
+                Bindings = BindingsCollection.Sqs,
+            };
+
             var binding = new AsyncApiStringReader(settings).ReadFragment<AsyncApiOperation>(actual, AsyncApiVersion.AsyncApi2_0, out _);
 
             // Assert
             actual.Should()
                   .BePlatformAgnosticEquivalentTo(expected);
             binding.Should().BeEquivalentTo(operation);
+
+            var expectedSqsBinding = (SqsOperationBinding)operation.Bindings.Values.First();
+            expectedSqsBinding.Should().BeEquivalentTo((SqsOperationBinding)binding.Bindings.Values.First(), options => options.IgnoringCyclicReferences());
         }
     }
 }
\ No newline at end of file