Linking with External APIs
While some Alexa skills are self-contained, many are actually just a front-end user interface to a larger backend application. This is similar to how many React or Angular applications are just front-ends that integrate with a backend application.
The Star Port 75 Travel skill may provide a lot of functionality on its own, but ultimately it is a user interface to what could be a much larger backend travel planning system. Therefore, we will need to connect our skill to the API of a backend system that handles the actual booking.
Account linking is a means by which an Alexa skill can connect to an API on behalf of a user, using OAuth 2[23] for security between the skill and the API. It involves registering the skill ...
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