diff --git a/docs/architecture/service-orchestration-boundary.md b/docs/architecture/service-orchestration-boundary.md
index 5fb9d1d..bc5b098 100644
--- a/docs/architecture/service-orchestration-boundary.md
+++ b/docs/architecture/service-orchestration-boundary.md
@@ -7,6 +7,7 @@ Constrain thalos-service to orchestration responsibilities after thalos-domain e
 - Coordinate identity use-case flow
 - Delegate policy/token decisions to thalos-domain abstractions
 - Adapt transport contracts
+- Route provider metadata (`InternalJwt`, `AzureAd`, `Google`) between edge/service/dal boundaries
 
 ## Prohibited Responsibilities
 - Owning identity decision policies
diff --git a/src/Thalos.Service.Application/Adapters/IdentityPolicyGrpcContractAdapter.cs b/src/Thalos.Service.Application/Adapters/IdentityPolicyGrpcContractAdapter.cs
index ebfde41..25cfde3 100644
--- a/src/Thalos.Service.Application/Adapters/IdentityPolicyGrpcContractAdapter.cs
+++ b/src/Thalos.Service.Application/Adapters/IdentityPolicyGrpcContractAdapter.cs
@@ -1,4 +1,5 @@
 using Thalos.Service.Application.Grpc;
+using BuildingBlock.Identity.Contracts.Conventions;
 using BuildingBlock.Identity.Contracts.Requests;
 
 namespace Thalos.Service.Application.Adapters;
@@ -11,12 +12,24 @@ public sealed class IdentityPolicyGrpcContractAdapter : IIdentityPolicyGrpcContr
     /// <inheritdoc />
     public EvaluateIdentityPolicyGrpcContract ToGrpc(EvaluateIdentityPolicyRequest request)
     {
-        return new EvaluateIdentityPolicyGrpcContract(request.SubjectId, request.TenantId, request.PermissionCode);
+        return new EvaluateIdentityPolicyGrpcContract(
+            request.SubjectId,
+            request.TenantId,
+            request.PermissionCode,
+            request.Provider.ToString());
     }
 
     /// <inheritdoc />
     public EvaluateIdentityPolicyRequest FromGrpc(EvaluateIdentityPolicyGrpcContract contract)
     {
-        return new EvaluateIdentityPolicyRequest(contract.SubjectId, contract.TenantId, contract.PermissionCode);
+        var provider = Enum.TryParse<IdentityAuthProvider>(contract.Provider, true, out var parsedProvider)
+            ? parsedProvider
+            : IdentityAuthProvider.InternalJwt;
+
+        return new EvaluateIdentityPolicyRequest(
+            contract.SubjectId,
+            contract.TenantId,
+            contract.PermissionCode,
+            provider);
     }
 }
diff --git a/src/Thalos.Service.Application/Grpc/EvaluateIdentityPolicyGrpcContract.cs b/src/Thalos.Service.Application/Grpc/EvaluateIdentityPolicyGrpcContract.cs
index 8fd286d..2dfacea 100644
--- a/src/Thalos.Service.Application/Grpc/EvaluateIdentityPolicyGrpcContract.cs
+++ b/src/Thalos.Service.Application/Grpc/EvaluateIdentityPolicyGrpcContract.cs
@@ -6,4 +6,9 @@ namespace Thalos.Service.Application.Grpc;
 /// <param name="SubjectId">Identity subject identifier.</param>
 /// <param name="TenantId">Tenant scope identifier.</param>
 /// <param name="PermissionCode">Permission code to evaluate.</param>
-public sealed record EvaluateIdentityPolicyGrpcContract(string SubjectId, string TenantId, string PermissionCode);
+/// <param name="Provider">Auth provider.</param>
+public sealed record EvaluateIdentityPolicyGrpcContract(
+    string SubjectId,
+    string TenantId,
+    string PermissionCode,
+    string Provider = "InternalJwt");
diff --git a/src/Thalos.Service.Application/Ports/IdentityPolicyContextReadPortDalAdapter.cs b/src/Thalos.Service.Application/Ports/IdentityPolicyContextReadPortDalAdapter.cs
index d66caa9..e3f7825 100644
--- a/src/Thalos.Service.Application/Ports/IdentityPolicyContextReadPortDalAdapter.cs
+++ b/src/Thalos.Service.Application/Ports/IdentityPolicyContextReadPortDalAdapter.cs
@@ -20,7 +20,8 @@ public sealed class IdentityPolicyContextReadPortDalAdapter(
             CreateEnvelope(),
             request.SubjectId,
             request.TenantId,
-            request.PermissionCode);
+            request.PermissionCode,
+            request.Provider);
 
         var policyRecord = await identityRepository.ReadIdentityPolicyAsync(policyLookupRequest);
         if (policyRecord is null)
@@ -28,6 +29,7 @@ public sealed class IdentityPolicyContextReadPortDalAdapter(
             return new IdentityPolicyContextData(
                 request.SubjectId,
                 request.PermissionCode,
+                request.Provider,
                 false,
                 []);
         }
@@ -35,7 +37,8 @@ public sealed class IdentityPolicyContextReadPortDalAdapter(
         var permissionSetRequest = new IdentityPermissionSetLookupRequest(
             policyLookupRequest.Envelope,
             request.SubjectId,
-            request.TenantId);
+            request.TenantId,
+            request.Provider);
 
         var permissions = await identityRepository.ReadPermissionSetAsync(permissionSetRequest);
         var grantedPermissions = permissions
@@ -45,6 +48,7 @@ public sealed class IdentityPolicyContextReadPortDalAdapter(
         return new IdentityPolicyContextData(
             request.SubjectId,
             request.PermissionCode,
+            policyRecord.Provider,
             policyRecord.ContextSatisfied,
             grantedPermissions);
     }
diff --git a/src/Thalos.Service.Application/Ports/IdentityTokenReadPortDalAdapter.cs b/src/Thalos.Service.Application/Ports/IdentityTokenReadPortDalAdapter.cs
index 834ec48..1b40dcc 100644
--- a/src/Thalos.Service.Application/Ports/IdentityTokenReadPortDalAdapter.cs
+++ b/src/Thalos.Service.Application/Ports/IdentityTokenReadPortDalAdapter.cs
@@ -19,15 +19,17 @@ public sealed class IdentityTokenReadPortDalAdapter(
         var lookupRequest = new IdentityTokenLookupRequest(
             CreateEnvelope(),
             request.SubjectId,
-            request.TenantId);
+            request.TenantId,
+            request.Provider,
+            request.ExternalToken);
 
         var tokenRecord = await identityRepository.ReadIdentityTokenAsync(lookupRequest);
         if (tokenRecord is null)
         {
-            return new IdentityTokenData(null, null);
+            return new IdentityTokenData(null, null, request.Provider);
         }
 
-        return new IdentityTokenData(tokenRecord.Token, tokenRecord.ExpiresInSeconds);
+        return new IdentityTokenData(tokenRecord.Token, tokenRecord.ExpiresInSeconds, tokenRecord.Provider);
     }
 
     private IdentityContractEnvelope CreateEnvelope()
diff --git a/src/Thalos.Service.Grpc/Protos/identity_runtime.proto b/src/Thalos.Service.Grpc/Protos/identity_runtime.proto
index 80fcbce..02b620b 100644
--- a/src/Thalos.Service.Grpc/Protos/identity_runtime.proto
+++ b/src/Thalos.Service.Grpc/Protos/identity_runtime.proto
@@ -12,6 +12,8 @@ service IdentityRuntime {
 message IssueIdentityTokenGrpcRequest {
   string subject_id = 1;
   string tenant_id = 2;
+  string provider = 3;
+  string external_token = 4;
 }
 
 message IssueIdentityTokenGrpcResponse {
@@ -23,6 +25,7 @@ message EvaluateIdentityPolicyGrpcRequest {
   string subject_id = 1;
   string tenant_id = 2;
   string permission_code = 3;
+  string provider = 4;
 }
 
 message EvaluateIdentityPolicyGrpcResponse {
diff --git a/src/Thalos.Service.Grpc/Services/IdentityRuntimeGrpcService.cs b/src/Thalos.Service.Grpc/Services/IdentityRuntimeGrpcService.cs
index 84c5991..43677db 100644
--- a/src/Thalos.Service.Grpc/Services/IdentityRuntimeGrpcService.cs
+++ b/src/Thalos.Service.Grpc/Services/IdentityRuntimeGrpcService.cs
@@ -1,4 +1,5 @@
 using Grpc.Core;
+using BuildingBlock.Identity.Contracts.Conventions;
 using Thalos.Service.Application.Adapters;
 using Thalos.Service.Application.Grpc;
 using Thalos.Service.Application.UseCases;
@@ -24,7 +25,11 @@ public sealed class IdentityRuntimeGrpcService(
         IssueIdentityTokenGrpcRequest request,
         ServerCallContext context)
     {
-        var useCaseRequest = new IssueIdentityTokenRequest(request.SubjectId, request.TenantId);
+        var useCaseRequest = new IssueIdentityTokenRequest(
+            request.SubjectId,
+            request.TenantId,
+            ParseProvider(request.Provider),
+            request.ExternalToken);
         var useCaseResponse = await issueIdentityTokenUseCase.HandleAsync(useCaseRequest);
 
         return new IssueIdentityTokenGrpcResponse
@@ -47,7 +52,8 @@ public sealed class IdentityRuntimeGrpcService(
         var grpcContract = new EvaluateIdentityPolicyGrpcContract(
             request.SubjectId,
             request.TenantId,
-            request.PermissionCode);
+            request.PermissionCode,
+            request.Provider);
 
         var useCaseRequest = grpcContractAdapter.FromGrpc(grpcContract);
         var useCaseResponse = await evaluateIdentityPolicyUseCase.HandleAsync(useCaseRequest);
@@ -59,4 +65,11 @@ public sealed class IdentityRuntimeGrpcService(
             IsAllowed = useCaseResponse.IsAllowed
         };
     }
+
+    private static IdentityAuthProvider ParseProvider(string provider)
+    {
+        return Enum.TryParse<IdentityAuthProvider>(provider, true, out var parsedProvider)
+            ? parsedProvider
+            : IdentityAuthProvider.InternalJwt;
+    }
 }
diff --git a/tests/Thalos.Service.Application.UnitTests/EvaluateIdentityPolicyUseCaseTests.cs b/tests/Thalos.Service.Application.UnitTests/EvaluateIdentityPolicyUseCaseTests.cs
index b9f7697..4660373 100644
--- a/tests/Thalos.Service.Application.UnitTests/EvaluateIdentityPolicyUseCaseTests.cs
+++ b/tests/Thalos.Service.Application.UnitTests/EvaluateIdentityPolicyUseCaseTests.cs
@@ -1,5 +1,6 @@
 using BuildingBlock.Identity.Contracts.Requests;
 using BuildingBlock.Identity.Contracts.Responses;
+using BuildingBlock.Identity.Contracts.Conventions;
 using Thalos.Service.Application.Ports;
 using Thalos.Service.Application.UseCases;
 using Thalos.Domain.Contracts;
@@ -27,7 +28,11 @@ public class EvaluateIdentityPolicyUseCaseTests
     {
         public IdentityPolicyContextRequest BuildPolicyContextRequest(EvaluateIdentityPolicyRequest request)
         {
-            return new IdentityPolicyContextRequest(request.SubjectId, request.TenantId, request.PermissionCode);
+            return new IdentityPolicyContextRequest(
+                request.SubjectId,
+                request.TenantId,
+                request.PermissionCode,
+                request.Provider);
         }
 
         public EvaluateIdentityPolicyResponse Evaluate(
@@ -48,6 +53,7 @@ public class EvaluateIdentityPolicyUseCaseTests
             return Task.FromResult(new IdentityPolicyContextData(
                 request.SubjectId,
                 request.PermissionCode,
+                IdentityAuthProvider.InternalJwt,
                 true,
                 [request.PermissionCode]));
         }
diff --git a/tests/Thalos.Service.Application.UnitTests/IssueIdentityTokenUseCaseTests.cs b/tests/Thalos.Service.Application.UnitTests/IssueIdentityTokenUseCaseTests.cs
index 49282b3..888ee25 100644
--- a/tests/Thalos.Service.Application.UnitTests/IssueIdentityTokenUseCaseTests.cs
+++ b/tests/Thalos.Service.Application.UnitTests/IssueIdentityTokenUseCaseTests.cs
@@ -1,4 +1,5 @@
 using BuildingBlock.Identity.Contracts.Requests;
+using BuildingBlock.Identity.Contracts.Conventions;
 using Thalos.Service.Application.Ports;
 using Thalos.Service.Application.UseCases;
 using Thalos.Domain.Contracts;
@@ -25,7 +26,7 @@ public class IssueIdentityTokenUseCaseTests
     {
         public Task<IdentityTokenData> ReadTokenAsync(IssueIdentityTokenRequest request)
         {
-            return Task.FromResult(new IdentityTokenData("token-123", 3600));
+            return Task.FromResult(new IdentityTokenData("token-123", 3600, IdentityAuthProvider.InternalJwt));
         }
     }
 }
diff --git a/tests/Thalos.Service.Application.UnitTests/RuntimeWiringTests.cs b/tests/Thalos.Service.Application.UnitTests/RuntimeWiringTests.cs
index ca99bce..60c2aa3 100644
--- a/tests/Thalos.Service.Application.UnitTests/RuntimeWiringTests.cs
+++ b/tests/Thalos.Service.Application.UnitTests/RuntimeWiringTests.cs
@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using BuildingBlock.Identity.Contracts.Conventions;
 using BuildingBlock.Identity.Contracts.Requests;
 using Thalos.Service.Application.Adapters;
 using Thalos.Service.Application.DependencyInjection;
@@ -44,6 +45,26 @@ public class RuntimeWiringTests
         Assert.Equal(0, tokenResponse.ExpiresInSeconds);
     }
 
+    [Fact]
+    public async Task AddThalosServiceRuntime_WhenAzureProviderUsed_IssuesProviderToken()
+    {
+        var services = new ServiceCollection();
+        services.AddThalosServiceRuntime();
+
+        using var provider = services.BuildServiceProvider();
+        var issueTokenUseCase = provider.GetRequiredService<IIssueIdentityTokenUseCase>();
+
+        var tokenResponse = await issueTokenUseCase.HandleAsync(
+            new IssueIdentityTokenRequest(
+                string.Empty,
+                "tenant-2",
+                IdentityAuthProvider.AzureAd,
+                "azure-id-token"));
+
+        Assert.StartsWith("azure:", tokenResponse.Token);
+        Assert.True(tokenResponse.ExpiresInSeconds > 0);
+    }
+
     [Fact]
     public void IdentityPolicyGrpcContractAdapter_WhenMapped_PreservesValues()
     {
@@ -62,12 +83,17 @@ public class RuntimeWiringTests
     public void IdentityPolicyGrpcContractAdapter_WhenFromGrpc_UsesExpectedContractShape()
     {
         var adapter = new IdentityPolicyGrpcContractAdapter();
-        var contract = new EvaluateIdentityPolicyGrpcContract("subject-9", "tenant-9", "identity.token.issue");
+        var contract = new EvaluateIdentityPolicyGrpcContract(
+            "subject-9",
+            "tenant-9",
+            "identity.token.issue",
+            IdentityAuthProvider.Google.ToString());
 
         var request = adapter.FromGrpc(contract);
 
         Assert.Equal("subject-9", request.SubjectId);
         Assert.Equal("tenant-9", request.TenantId);
         Assert.Equal("identity.token.issue", request.PermissionCode);
+        Assert.Equal(IdentityAuthProvider.Google, request.Provider);
     }
 }