In production data infrastructure, an API can provide an access layer that invokes queries without exposing the underlying databases. This decouples the system from source implementation details and makes database upgrades easier to manage. section 9.4.1
When building a production data pipeline:
- Route calls and interactions through a well-controlled, documented API, especially when the existing architecture exposes databases directly. section 9.4.1
- Test the resulting data pipeline: changes in production can introduce biases that affect model behavior. section 9.4.1











































