Can a flow instance access multiple Common Data Service databases?

The ability of a flow instance to access Common Data Service (CDS) databases is determined by the environment within which it operates. Each flow is designed to run within a specific environment, and as such, it can only connect to the CDS database associated with that environment. This means that when a flow is executed, it is restricted to interacting solely with the data in the single CDS instance that belongs to its home environment.

While environments can host multiple databases, a flow instance does not have the capability to switch contexts during its execution to access multiple databases simultaneously unless it is explicitly designed to do so through separate flows for each environment.

This design principle helps to ensure data isolation and security, maintaining the integrity of data across different business units or projects that may be utilizing the Power Platform. The other options suggest broader capabilities for accessing multiple databases, which is not possible within the operational boundaries of a single flow instance as created and managed in Power Automate.