At which layer does RPA interact with multiple applications?

RPA primarily interacts with multiple applications at the presentation layer. This layer is where user interfaces are displayed and where user interaction occurs. In the context of RPA, robots simulate human actions by navigating through the graphical user interfaces (GUIs) of various software applications. By performing clicks, keystrokes, and other interactions that a human user does, RPA can bridge different applications that may not have direct integration methods, allowing for automation across them.

On the other hand, the object layer usually deals with specific components of applications and is more about the underlying programmatic interfaces rather than direct user interface interactions. The data layer pertains to the structure and storage of data, which does not involve interaction with GUIs. Thus, the presentation layer is essential for RPA as it focuses on automating tasks that involve actual user interface interactions across applications.