Hello,

Although the automations might be the same, the purpose and architecture are radically different:

    - RDA: The robot works as an assistant to the agent or operator managing the desktop. In most cases it is expected that the agent provides input and interacts with the robot via dialogs. https://community.pega.com/knowledgebase/articles/pega-rpa/robotic-desktop-automation-attended

          1) Is deployed on the agent or operator desktop

          2) When integrating with Platform; the robot exposes a local REST service. Platform makes calls to this REST service when required by the process executed via Flow Action or Data Page.

    - RPA: The robot works completely stand-alone without any supervision. It is expected that the robot subscribes to work queue(s) to retrieve work, complete it through executing the automations and respond with the result. https://community.pega.com/knowledgebase/articles/pega-rpa/robotic-process-automation-unattended

          1) Is deployed on a VM, VDI or stand-alone desktop.

          2) When integrating with Platform; the robot uses REST services in Platform to: Register, Retrieve work, etc

          3) Typically, it is controlled by the RPA service installed on the same VM