app.build, originally focused on creating apps with a fixed tech stack, has evolved to support data applications using a modern Python stack with the NiceGUI framework, which excels in data visualization and offers flexibility through Python libraries. The transition allows for the development of internal enterprise apps like dashboards and tech demos, using PostgreSQL for persistent storage and ensuring production-readiness similar to FastAPI. The new stack, offering better functionality than previous tRPC apps, can leverage integrations like Databricks Unity Catalog, although these remain optional to accommodate customizations. Despite the discontinuation of its managed version, app.build's source code is available for developers interested in building agents or exploring implementation examples. The platform aims to continue expanding its offerings by introducing additional stacks, with a focus on maintaining quality through structured scaffolding and validation processes.