What is the difference between a v2 and v3 API?

v2 APIs are the original publicly available APIs...

Access is controlled based on the selected API reaching registration in the API Gateway Maintenance program.

v3 APIs build upon the original API framework. They introduce more granular security by associating each API registration with a TASS.web security role, allowing access to be restricted with the same permission points available to TASS.web users.