The primary requirement is for a new in-app experience that summarizes records and guides users through a workflow, built using a code-first approach that supports ALM and code review. A generative page is the ideal solution as it uses AI to create a starting point for a custom page with React code. This generated code can be checked into source control for code review and is packaged within a solution, ensuring it is ALM-friendly and requires no manual post-deployment edits. It directly addresses the need for a guided, AI-assisted UI.

A. Embedded chat pane only: A chat pane is for conversational AI, not for building a structured, multi-step guided workflow UI as required.

B. Canvas screen with copied controls: Canvas apps are primarily low-code and are not the intended tool for a code-first, React-based development process with rigorous code reviews.

D. Custom web resource page with manual React build pipeline: This is a legacy approach. Generative pages provide a more modern, integrated, and streamlined development experience for the same outcome.

1. Microsoft Learn. (2024). Add an AI-generated page to a model-driven app (preview). Section: "What the AI-generated page contains". This document explicitly states that the feature creates a custom page, a Dataverse table, and a React web resource, supporting a code-first, ALM-compatible development model.

2. Microsoft Power Platform ALM Guide. (2023). Application lifecycle management (ALM) with Microsoft Power Platform. Section: "Developer-focused ALM". This guide promotes using solution-aware components like custom pages over manual web resources for better ALM.

3. Microsoft Learn. (2024). Use code components in Power Apps. This document provides context on how modern code-first components, like the React web resource from a generative page, are the preferred method for professional developer extensibility within Power Platform.