QnA Maker is being retired. Hello, Question Answering!

Hi Shubhendu_Satsangi ,

Thank you for the super nice blog post!

In the post you mention "Powered by state-of-the-art transformer models and https://msturing.org/ natural language model, Question Answering is Microsoft Azure’s latest intelligent Q&A offering with marked improvements in relevance and quality over QnA Maker". Are there any research papers, blog post etc. which explain in more detail which state-of-the-art transformer models are used, why and how they are used to answer questions. I am using Question Answering in my master thesis project and in my thesis I need to explain in detail how Question Answering works rather than just mention state-of-the-art transformer models.

Thanks in advance!