As part of a project, I'm looking to connect with an external service. Currently the app is configured to authenticate via API keys. But recently the external application changed to oAUTH authentication. How can I change my app to suite the oAUTH authentication process?.
There are some options but just to start out with build a microflow that retrieves your OAuth token for you and then just use that token in your main API calls.
Things to look into as your app progresses is how features integrate with your application and the expected traffic on your API calls.