I'm exploring the microsoft services.
LUIS caught my attention. Would it be beneficial to add it to a QNAmaker bot?
The bot basically answers questions as accurately as possible, nothing else, just pure answer from knowledgebase.
Do I even need to add LUIS?
No, you don't need LUIS to have QnA maker answer questions. You might add LUIS as the app grows to do more than just a faq style interaction.
By itself, if all you want is for the bot to answer questions, then this is sufficient. However, even still it is helpful to pre-emptively tell users what your bot can actually do, so I would also like to suggest adding a pro-active message which actually informs your user of what your bot can actually do, i.e have the bot say something like: "Hi! I'm -A Bot-, you can ask me questions and I'll do my best to answer!"
If you are interested in looking at a c# implementation of LUIS with QnA here is a sample
