Hello @jackson
Thanks for reaching out to us, I can understand your confusion here. To add more information to Jordi said - The question answering Authoring API is used to automate common tasks like adding new question answer pairs, as well as creating, publishing, and maintaining projects/knowledge bases.
To conclude, you can think it is the process to prepare the database and the train the model.
You can refer to the Authoring API document to see - [https://learn.microsoft.com/en-us/azure/cognitive-services/language-service/question-answering/how-to/authoring
Jordi mentioned it as LUIS but now LUIS is rebranded under Language Service which you are mentioning.
I hope this helps.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.