[Doc Improvement][Update glossary for agent][3968460]

msteams-platform/get-started/glossary.md

@@ -16,7 +16,8 @@ Common terms and definitions used in Microsoft Teams developer documentation.
 | [Action command](../messaging-extensions/how-to/action-commands/define-action-command.md) | A type of message extension app that uses a pop-up to collect or display information. <br>**See also**: [Message extension](#m); [Search commands](#s) |
 | [Access token](../tabs/how-to/authentication/tab-sso-code.md) | An access token enables a client app to securely call protected web APIs. Access tokens are used by web APIs to perform authentication and authorization. <br> **See also**: [Identity token](#i) <br> For more information, see [Access token](/azure/active-directory/develop/access-tokens), [Authentication](../concepts/authentication/authentication.md) |
 | [Adaptive Cards](../task-modules-and-cards/what-are-cards.md) | An actionable content snippet added to a conversation by a bot or message extension. Use text, graphics, and buttons with these cards for rich communication. <br> **See also**: [Dialog](#d); [Adaptive Card Schema Explorer](https://adaptivecards.microsoft.com/?topic=AdaptiveCard) |
-| [Administrator consent](../tabs/how-to/authentication/tab-sso-register-aad.md) | An administrator can grant consent for the application on behalf of all users in the organization. It helps avoid the need for user consent. <br> [SSO](#s); [Consent dialog](#c); [User consent](#u) |
+| [Administrator consent](../tabs/how-to/authentication/tab-sso-register-aad.md) | An administrator can grant consent for the application on behalf of all users in the organization. It helps avoid the need for user consent. <br> **See also**: [SSO](#s); [Consent dialog](#c); [User consent](#u) |
+| [Agent](/microsoft-365-copilot/extensibility/agents-overview) | Agents for Microsoft 365 Copilot are specialized, AI-powered assistants designed to handle a host of tasks within an organization. <br> **See also**: [Custom engine agent](#c); [Declarative agent](#d) |
 | [AI label](~/bots/how-to/format-ai-bot-messages.md) | An AI label in an AI bot message indicates that the content was generated using AI and reminds the user that the content they are interacting with was not created by a human, but by an AI system. <br> **See also**: [Citation](#c); [Sensitivity label](#s) |
 | [Anonymous](../apps-in-teams-meetings/build-apps-for-anonymous-user.md) |Anonymous users don't have a Microsoft Entra identity and aren't federated with a tenant. The anonymous participants are external users but their identity isn't shown in the meeting. An anonymous user can be a presenter or an attendee but can't be an organizer. <br>**See also**: [Federated or external](#f); [In-tenant](#i); [Guest](#g)|
 | [App Catalog](../toolkit/publish.md) | A site that stores SharePoint and Office apps for an organization's internal use. <br>**See also**: [SPFx](#s) |
@@ -78,16 +79,17 @@ Common terms and definitions used in Microsoft Teams developer documentation.
 | [Conversational bot](../bots/how-to/conversations/conversation-messages.md) |  It lets a user interact with your web service using text, interactive cards, and dialogs. <br>**See also** [Chat bot](#c); [Standalone app](#s) |
 | [Copilot](../messaging-extensions/build-bot-based-agent.md)|Microsoft 365 Copilot is powered by an advanced processing and orchestration engine that seamlessly integrates Microsoft 365 apps, Microsoft Graph, and Large Language Models (LLMs) to turn your words into the most powerful productivity tool. |
 | [Copilot handoff](../bots/how-to/conversations/bot-copilot-handoff.md) | Copilot handoffs are plugin-provided deep links that carry over chat context, enabling users to seamlessly transition their chat with Microsoft 365 Copilot to your bot service. |
-| [Custom engine agent](/microsoft-365-copilot/extensibility/overview-custom-engine-agent) | Custom engine agents are conversational Teams bots designed to harness the powerful capabilities of Large Language Models (LLMs) for seamless user interaction. These advanced bots mark a significant departure from traditional bots, offering an extensive range of features that elevate the overall user experience. |
-| Customer-owned apps | An app created by you or your organization that is meant for use by other Teams app users outside the organization. It can be made available on Microsoft Teams Store. <br> **See also**: [Teams Store validation guidelines](#s); [Microsoft Store](#s); [LOB apps](#l); [Personal tab](#p); [Shared apps](#s) |
 | Custom app built for your org (LOB app) | An app created only for Teams by you or your organization.  |
 | [Custom app upload](../toolkit/publish.md#publish-to-individual-scope-or-custom-app-upload-permission) | A process where a Teams app is loaded to the Teams client to test it in the Teams environment before distributing it. |
+| [Custom engine agent](/microsoft-365-copilot/extensibility/overview-custom-engine-agent?toc=/microsoftteams/platform/toc.json&bc=/microsoftteams/platform/breadcrumb/toc.json) | Custom engine agents are fully customized AI assistants designed for scenarios that require complex workflows, orchestration, or specific language models. <br>For more information, see [Custom engine agent](/microsoft-365-copilot/extensibility/agents-overview#custom-engine-agents)  <br> **See also**: [Agents](#a); [Declarative agent](#d) |
 | [Custom Together Mode](../apps-in-teams-meetings/teams-together-mode.md)| Custom Together Mode scenes in Teams provide an immersive and engaging meeting environment. <br>**See also**: [Developer Portal for Teams](#d) |
+| Customer-owned apps | An app created by you or your organization that is meant for use by other Teams app users outside the organization. It can be made available on Microsoft Teams Store. <br> **See also**: [Teams Store validation guidelines](#s); [Microsoft Store](#s); [LOB apps](#l); [Personal tab](#p); [Shared apps](#s) |
 
 ## D
 
 | Term | Definition |
 | --- | --- |
+| [Declarative agent](/microsoft-365-copilot/extensibility/agents-overview) | Declarative agents are AI-powered tools that allow you to configure Copilot for specific scenarios by adding custom instructions, additional knowledge, and actions to automate business processes. <br> **See also**: [Agents](#a); [Custom engine agent](#c); [Declarative agent](#d) |
 | [Deep linking](../concepts/build-and-test/deep-links.md) | In a Teams app, you can create deep links to information and features within Teams or to help the user navigate to content in your app. |
 | [Default install scope](../concepts/deploy-and-publish/add-default-install-scope.md#configure-your-apps-default-install-scope)| An app manifest property (`defaultInstallScope`) that specifies the install scope defined for the app by default. <br> **See also**: [App manifest](#a); [App scope](#a)|
 | [Delegated permission](../tabs/how-to/authentication/tab-sso-graph-api.md) | They're used by apps that have a signed-in user present. For these apps, either the user or an administrator consents to the permissions that the app requests and the app can act as the signed-in user when making calls to Microsoft Graph.  <br> **See also**: [SSO](#s); [Permission](#p); [Scope](#s) |
@@ -262,6 +264,7 @@ Common terms and definitions used in Microsoft Teams developer documentation.
 | [Thread discussion](../tabs/design/tabs.md#thread-discussion) | A conversation posted on a channel or chat between users. <br>**See also** [Conversation](#c); [Channel](#c) |
 | [Teams](../overview.md) | Microsoft Teams is the ultimate message app for your organization. It's a workspace for real-time collaboration and communication, meetings, file and app sharing. |
 | [Teams AI library](../bots/how-to/teams-conversational-ai/teams-conversation-ai-overview.md) | A Teams-centric interface to GPT-based common language models and user intent engines. You can take on complex and expensive tasks of writing and maintaining conversational bot logic to integrate with Large Language Models (LLMs).|
+| [Teams AI library v2 (preview)](/microsoftteams/platform/teams-ai-library/welcome) | Teams AI Library v2 SDK (preview) simplifies the development of AI-driven bots for Microsoft Teams. <br> **See also**: [Custom engine agent](#c) |
 | [Teams app capabilities](../concepts/design/map-use-cases.md#app-capabilities-mapped-to-features)| The Teams app capabilities are the core functionalities that you can build in your app, as defined in your app manifest. They're also called entry or extension points because they enable integration and interaction. <br> **See also**: [App scope](#a)|
 | [Teams identity](../tabs/how-to/authentication/tab-sso-overview.md) | The Microsoft account or Microsoft 365 account of an app user that is used to log in to Teams client, web, or mobile app. |
 | [Teams identity](../tabs/how-to/authentication/tab-sso-overview.md) | The Microsoft account or Microsoft 365 account of an app user that is used to sign in to Teams client, web, or mobile app. |