What can Suitelets do that Restlets cannot? What can Restlets do that Suitelets cannot?

SuiteLets can be form based. SuiteLets can be run without user login.

RESTlets can accepts GET, POST, PUT, DELETE. Purely for API purpose. Suitelet can show custom UI/form and can also serve as API handler.

Suitelets can also run as a specific role/user while restlets are scroped to the current execution context IIRC.

RESTlets run with the permission of the user tokens/credentials were generated for. At least it did for TBA.

Thanks everyone 🙂