diff --git a/libraries/microsoft-agents-activity/microsoft_agents/activity/channel_account.py b/libraries/microsoft-agents-activity/microsoft_agents/activity/channel_account.py
index c00e5ad7..cb0b7055 100644
--- a/libraries/microsoft-agents-activity/microsoft_agents/activity/channel_account.py
+++ b/libraries/microsoft-agents-activity/microsoft_agents/activity/channel_account.py
@@ -1,7 +1,7 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
-from typing import Any
+from typing import Any, Optional
 
 from pydantic import ConfigDict
 from .agents_model import AgentsModel
@@ -27,11 +27,11 @@ class ChannelAccount(AgentsModel):
 
     id: NonEmptyString = None
     name: str = None
-    aad_object_id: NonEmptyString = None
-    role: NonEmptyString = None
-    agentic_user_id: NonEmptyString = None
-    agentic_app_id: NonEmptyString = None
-    tenant_id: NonEmptyString = None
+    aad_object_id: Optional[NonEmptyString] = None
+    role: Optional[NonEmptyString] = None
+    agentic_user_id: Optional[NonEmptyString] = None
+    agentic_app_id: Optional[NonEmptyString] = None
+    tenant_id: Optional[NonEmptyString] = None
 
     @property
     def properties(self) -> dict[str, Any]:
diff --git a/libraries/microsoft-agents-activity/microsoft_agents/activity/conversation_account.py b/libraries/microsoft-agents-activity/microsoft_agents/activity/conversation_account.py
index 80a8bfa2..93813146 100644
--- a/libraries/microsoft-agents-activity/microsoft_agents/activity/conversation_account.py
+++ b/libraries/microsoft-agents-activity/microsoft_agents/activity/conversation_account.py
@@ -31,11 +31,11 @@ class ConversationAccount(AgentsModel):
     :type properties: object
     """
 
-    is_group: bool = None
+    is_group: Optional[bool] = None
     conversation_type: NonEmptyString = None
     id: NonEmptyString
-    name: NonEmptyString = None
-    aad_object_id: NonEmptyString = None
-    role: NonEmptyString = None
+    name: Optional[NonEmptyString] = None
+    aad_object_id: Optional[NonEmptyString] = None
+    role: Optional[NonEmptyString] = None
     tenant_id: Optional[NonEmptyString] = None
     properties: object = None
diff --git a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/authorization/claims_identity.py b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/authorization/claims_identity.py
index af30b409..5cd8f089 100644
--- a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/authorization/claims_identity.py
+++ b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/authorization/claims_identity.py
@@ -78,4 +78,8 @@ def get_token_audience(self) -> str:
 
         :return: The token audience.
         """
-        return f"app://{self.get_outgoing_app_id()}"
+        return (
+            f"app://{self.get_outgoing_app_id()}"
+            if self.is_agent_claim()
+            else AuthenticationConstants.AGENTS_SDK_SCOPE
+        )
diff --git a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/channel_service_adapter.py b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/channel_service_adapter.py
index 2b4e6969..60cf0e79 100644
--- a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/channel_service_adapter.py
+++ b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/channel_service_adapter.py
@@ -232,7 +232,10 @@ async def continue_conversation_with_claims(
         :type audience: Optional[str]
         """
         return await self.process_proactive(
-            claims_identity, continuation_activity, audience, callback
+            claims_identity,
+            continuation_activity,
+            audience or claims_identity.get_token_audience(),
+            callback,
         )
 
     async def create_conversation(  # pylint: disable=arguments-differ
diff --git a/test_samples/app_style/README.md b/test_samples/app_style/README.md
new file mode 100644
index 00000000..4c79ffb0
--- /dev/null
+++ b/test_samples/app_style/README.md
@@ -0,0 +1,44 @@
+# App-style samples
+
+This folder contains end-to-end samples that resemble production “app-style” experiences built on the Microsoft 365 Agents Python SDK. The new proactive messaging sample shows how to start a Microsoft Teams conversation or send a proactive message to an existing one.
+
+## Proactive messaging sample
+
+`proactive_messaging_agent.py` hosts two HTTP endpoints:
+
+- `POST /api/createconversation` – creates a new 1:1 Teams conversation with a user and optionally sends an initial message.
+- `POST /api/sendmessage` – sends another proactive message to an existing conversation id.
+
+### Prerequisites
+
+1. Python 3.10 or later.
+2. Install the Agents Python SDK packages (for example by running `pip install -e libraries/microsoft-agents-*`).
+3. A published Copilot Studio agent configured for Teams with application (client) ID, client secret, and tenant ID.
+
+### Configure environment variables
+
+1. Copy `env.TEMPLATE` to `.env` if you have not already.
+2. Populate the connection settings used to acquire tokens:
+   - `CONNECTIONS__SERVICE_CONNECTION__SETTINGS__CLIENTID`
+   - `CONNECTIONS__SERVICE_CONNECTION__SETTINGS__CLIENTSECRET`
+   - `CONNECTIONS__SERVICE_CONNECTION__SETTINGS__TENANTID`
+3. Add the proactive messaging settings from the template (bot id, agent id, tenant id, service URL, etc.). Optionally set `PROACTIVEMESSAGING__USERAADOBJECTID` to provide a default recipient.
+4. Leave `TOKENVALIDATION__ENABLED=false` for local testing. Set it to `true` and supply a valid bearer token when calling the APIs if you need auth checks.
+
+### Run the sample
+
+```pwsh
+python proactive_messaging_agent.py
+```
+
+The server listens on `http://localhost:5199` by default. Use the following helper commands to exercise the endpoints (replace the sample values with your own IDs):
+
+```pwsh
+# Create a new conversation (returns conversationId)
+Invoke-RestMethod -Method POST -Uri "http://localhost:5199/api/createconversation" -ContentType "application/json" -Body (@{ Message = "Hello from proactive sample"; UserAadObjectId = "00000000-0000-0000-0000-000000000123" } | ConvertTo-Json)
+
+# Send another proactive message
+Invoke-RestMethod -Method POST -Uri "http://localhost:5199/api/sendmessage" -ContentType "application/json" -Body (@{ ConversationId = "<conversation-id>"; Message = "Second proactive ping" } | ConvertTo-Json)
+```
+
+When `TOKENVALIDATION__ENABLED` is `true`, add an `Authorization: Bearer <token>` header to each call. The proactive endpoints will respond with JSON payloads describing success or validation errors.
diff --git a/test_samples/app_style/echo_proactive_agent.py b/test_samples/app_style/echo_proactive_agent.py
new file mode 100644
index 00000000..ed91ded4
--- /dev/null
+++ b/test_samples/app_style/echo_proactive_agent.py
@@ -0,0 +1,285 @@
+"""Echo skill sample that mirrors the Copilot Studio EchoSkill agent."""
+
+from __future__ import annotations
+
+import json
+import logging
+from dataclasses import dataclass
+from os import environ, path
+from typing import Any, Dict, Optional
+
+from aiohttp import web
+from dotenv import load_dotenv
+
+from microsoft_agents.activity import (
+    load_configuration_from_env,
+    Activity,
+    ConversationReference,
+    EndOfConversationCodes,
+)
+from microsoft_agents.authentication.msal import MsalConnectionManager
+from microsoft_agents.hosting.aiohttp import CloudAdapter, start_agent_process
+from microsoft_agents.hosting.core import (
+    AgentApplication,
+    Authorization,
+    MemoryStorage,
+    MessageFactory,
+    TurnContext,
+    TurnState,
+)
+from microsoft_agents.hosting.core.authorization import ClaimsIdentity
+from microsoft_agents.hosting.core.storage import StoreItem
+
+
+@dataclass
+class SendActivityRequest:
+    """Request payload used to resume conversations proactively."""
+
+    conversation_id: str
+    message: str
+
+    @classmethod
+    def from_dict(cls, payload: Dict[str, Any]) -> "SendActivityRequest":
+        conversation_id = payload.get("conversationId") or payload.get(
+            "conversation_id"
+        )
+        if not conversation_id:
+            raise ValueError("conversationId is required.")
+
+        message = payload.get("message")
+        if not message:
+            raise ValueError("message is required.")
+
+        return cls(conversation_id=conversation_id, message=message)
+
+
+@dataclass
+class ConversationReferenceRecord(StoreItem):
+    """Persistent envelope for a conversation reference and associated identity."""
+
+    claims: dict[str, str]
+    is_authenticated: bool
+    authentication_type: Optional[str]
+    reference: ConversationReference
+
+    @staticmethod
+    def get_key(conversation_id: str) -> str:
+        return f"conversationreferences/{conversation_id}"
+
+    @property
+    def key(self) -> str:
+        return self.get_key(self.reference.conversation.id)
+
+    @classmethod
+    def from_context(cls, context: TurnContext) -> "ConversationReferenceRecord":
+        identity = context.identity or ClaimsIdentity({}, False)
+        reference = context.activity.get_conversation_reference()
+        return cls(
+            claims=dict(identity.claims),
+            is_authenticated=identity.is_authenticated,
+            authentication_type=identity.authentication_type,
+            reference=reference,
+        )
+
+    def to_identity(self) -> ClaimsIdentity:
+        return ClaimsIdentity(
+            claims=dict(self.claims),
+            is_authenticated=self.is_authenticated,
+            authentication_type=self.authentication_type,
+        )
+
+    def store_item_to_json(self) -> Dict[str, Any]:
+        return {
+            "claims": dict(self.claims),
+            "is_authenticated": self.is_authenticated,
+            "authentication_type": self.authentication_type,
+            "reference": self.reference.model_dump(mode="json"),
+        }
+
+    @staticmethod
+    def from_json_to_store_item(
+        json_data: Dict[str, Any],
+    ) -> "ConversationReferenceRecord":
+        reference_payload = json_data.get("reference")
+        if not reference_payload:
+            raise ValueError("Conversation reference payload is missing.")
+
+        reference = ConversationReference.model_validate(
+            reference_payload, strict=False
+        )
+        return ConversationReferenceRecord(
+            claims=json_data.get("claims", {}),
+            is_authenticated=json_data.get("is_authenticated", False),
+            authentication_type=json_data.get("authentication_type"),
+            reference=reference,
+        )
+
+
+load_dotenv(path.join(path.dirname(__file__), ".env"))
+agents_sdk_config = load_configuration_from_env(environ)
+
+storage = MemoryStorage()
+connection_manager = MsalConnectionManager(**agents_sdk_config)
+adapter = CloudAdapter(connection_manager=connection_manager)
+authorization = Authorization(storage, connection_manager, **agents_sdk_config)
+AGENT_APP = AgentApplication[TurnState](
+    storage=storage,
+    adapter=adapter,
+    authorization=authorization,
+    **agents_sdk_config.get("AGENTAPPLICATION", {}),
+)
+
+
+@AGENT_APP.activity("message")
+async def on_message(context: TurnContext, state: TurnState) -> None:
+    text = context.activity.text or ""
+    if "end" == text:
+        await context.send_activity("(EchoSkill) Ending conversation...")
+        end_activity = Activity.create_end_of_conversation_activity()
+        end_activity.code = EndOfConversationCodes.completed_successfully
+        await context.send_activity(end_activity)
+        await state.conversation.delete(context)
+        conversation = context.activity.conversation
+        if conversation and conversation.id:
+            await state.conversation._storage.delete(
+                [ConversationReferenceRecord.get_key(conversation.id)]
+            )
+        return
+
+    logging.info(
+        f"(EchoSkill) ConversationReference to save: {context.activity.get_conversation_reference().model_dump(mode='json', exclude_unset=True, by_alias=True)} with message: {text}"
+    )
+    record = ConversationReferenceRecord.from_context(context)
+    await state.conversation._storage.write({record.key: record})
+
+    await context.send_activity(MessageFactory.text(f"(EchoSkill): {text}"))
+
+
+class EchoSkillService:
+    def __init__(
+        self,
+        storage: MemoryStorage,
+        adapter: CloudAdapter,
+    ) -> None:
+        self._storage = storage
+        self._adapter = adapter
+
+    async def send_activity_to_conversation(
+        self, conversation_id: str, message: str
+    ) -> bool:
+        if not conversation_id:
+            return False
+
+        key = ConversationReferenceRecord.get_key(conversation_id)
+        items: Dict[str, ConversationReferenceRecord] = await self._storage.read(
+            [key], target_cls=ConversationReferenceRecord
+        )
+        record = items.get(key)
+        if not record:
+            return False
+
+        continuation_activity = record.reference.get_continuation_activity()
+
+        async def _callback(turn_context: TurnContext) -> None:
+            await turn_context.send_activity(message)
+
+        await self._adapter.continue_conversation_with_claims(
+            record.to_identity(), continuation_activity, _callback
+        )
+        return True
+
+
+async def _read_optional_json(request: web.Request) -> Dict[str, Any]:
+    if request.content_length in (0, None):
+        return {}
+    try:
+        return await request.json()
+    except json.JSONDecodeError:
+        return {}
+
+
+def create_app() -> web.Application:
+    """Create and configure the aiohttp application hosting the sample."""
+
+    load_dotenv(path.join(path.dirname(__file__), ".env"))
+
+    echo_service = EchoSkillService(storage, adapter)
+    global SERVICE_INSTANCE
+    SERVICE_INSTANCE = echo_service
+
+    app = web.Application()
+    app["adapter"] = adapter
+    app["agent_app"] = AGENT_APP
+    app["echo_service"] = echo_service
+    agent_config = connection_manager.get_default_connection_configuration()
+    if not agent_config:
+        raise ValueError("SERVICE_CONNECTION settings are missing.")
+    app["agent_configuration"] = agent_config
+
+    app.router.add_get("/", _handle_root)
+    app.router.add_post("/api/messages", _agent_entry_point)
+    app.router.add_post("/api/sendactivity", _handle_send_activity)
+
+    return app
+
+
+async def _handle_root(request: web.Request) -> web.Response:
+    return web.json_response({"status": "ready", "sample": "echo-skill"})
+
+
+async def _agent_entry_point(request: web.Request) -> web.Response:
+    agent_app: AgentApplication = request.app["agent_app"]
+    adapter: CloudAdapter = request.app["adapter"]
+    response = await start_agent_process(request, agent_app, adapter)
+    return response or web.Response(status=202)
+
+
+async def _handle_send_activity(request: web.Request) -> web.Response:
+    service: EchoSkillService = request.app["echo_service"]
+    payload = await _read_optional_json(request)
+
+    try:
+        send_request = SendActivityRequest.from_dict(payload)
+    except ValueError as exc:
+        return web.json_response(
+            {
+                "status": "Error",
+                "error": {"code": "Validation", "message": str(exc)},
+            },
+            status=400,
+        )
+
+    success = await service.send_activity_to_conversation(
+        send_request.conversation_id, send_request.message
+    )
+
+    if not success:
+        return web.json_response(
+            {
+                "status": "Error",
+                "error": {
+                    "code": "NotFound",
+                    "message": "Conversation reference not found.",
+                },
+            },
+            status=404,
+        )
+
+    return web.json_response(
+        {"status": "Delivered", "conversationId": send_request.conversation_id},
+        status=202,
+    )
+
+
+def main() -> None:
+    logging.basicConfig(level=logging.INFO)
+    app = create_app()
+
+    host = environ.get("HOST", "localhost")
+    port = int(environ.get("PORT", "3978"))
+
+    web.run_app(app, host=host, port=port)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test_samples/app_style/emtpy_agent.py b/test_samples/app_style/emtpy_agent.py
index dad36347..c68083c9 100644
--- a/test_samples/app_style/emtpy_agent.py
+++ b/test_samples/app_style/emtpy_agent.py
@@ -1,6 +1,13 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
+import logging
+from os import environ, path
+from dotenv import load_dotenv
+from microsoft_agents.activity import load_configuration_from_env
+from microsoft_agents.authentication.msal import (
+    MsalConnectionManager,
+)
 from microsoft_agents.hosting.core import (
     AgentApplication,
     TurnState,
@@ -8,10 +15,23 @@
     MemoryStorage,
 )
 from microsoft_agents.hosting.aiohttp import CloudAdapter
+from microsoft_agents.hosting.core.app.oauth.authorization import Authorization
 
 from shared import start_server
 
-AGENT_APP = AgentApplication[TurnState](storage=MemoryStorage(), adapter=CloudAdapter())
+logging.basicConfig(level=logging.INFO)
+load_dotenv(path.join(path.dirname(__file__), ".env"))
+
+agents_sdk_config = load_configuration_from_env(environ)
+
+STORAGE = MemoryStorage()
+CONNECTION_MANAGER = MsalConnectionManager(**agents_sdk_config)
+ADAPTER = CloudAdapter(connection_manager=CONNECTION_MANAGER)
+AUTHORIZATION = Authorization(STORAGE, CONNECTION_MANAGER, **agents_sdk_config)
+
+AGENT_APP = AgentApplication[TurnState](
+    storage=STORAGE, adapter=ADAPTER, authorization=AUTHORIZATION, **agents_sdk_config
+)
 
 
 async def _help(context: TurnContext, _state: TurnState):
@@ -33,6 +53,9 @@ async def on_message(context: TurnContext, _):
 
 if __name__ == "__main__":
     try:
-        start_server(AGENT_APP, None)
+        start_server(
+            agent_application=AGENT_APP,
+            auth_configuration=CONNECTION_MANAGER.get_default_connection_configuration(),
+        )
     except Exception as error:
         raise error
diff --git a/test_samples/app_style/env.TEMPLATE b/test_samples/app_style/env.TEMPLATE
index f9adb9ac..89af6af9 100644
--- a/test_samples/app_style/env.TEMPLATE
+++ b/test_samples/app_style/env.TEMPLATE
@@ -16,4 +16,14 @@ AGENTAPPLICATION__USERAUTHORIZATION__HANDLERS__MCS__SETTINGS__OBOCONNECTIONNAME=
 COPILOTSTUDIOAGENT__ENVIRONMENTID=environment-id
 COPILOTSTUDIOAGENT__SCHEMANAME=schema-name
 COPILOTSTUDIOAGENT__TENANTID=tenant-id
-COPILOTSTUDIOAGENT__AGENTAPPID=agent-app-id
\ No newline at end of file
+COPILOTSTUDIOAGENT__AGENTAPPID=agent-app-id
+
+# Proactive messaging sample settings
+PROACTIVEMESSAGING__BOTID=28:teams-app-id
+PROACTIVEMESSAGING__AGENTID=teams-app-id
+PROACTIVEMESSAGING__TENANTID=tenant-id
+PROACTIVEMESSAGING__SCOPE=https://api.botframework.com/.default
+PROACTIVEMESSAGING__CHANNELID=msteams
+PROACTIVEMESSAGING__SERVICEURL=https://smba.trafficmanager.net/teams/
+# Optional default user (if not supplied per request)
+PROACTIVEMESSAGING__USERAADOBJECTID=
diff --git a/test_samples/fastapi/shared/__init__.py b/test_samples/fastapi/shared/__init__.py
index be7909b4..3d625f30 100644
--- a/test_samples/fastapi/shared/__init__.py
+++ b/test_samples/fastapi/shared/__init__.py
@@ -11,5 +11,5 @@
     "get_pull_requests",
     "get_user_info",
     "create_profile_card",
-    "create_pr_card"
+    "create_pr_card",
 ]