Hi Jonathan - thanks for submitting this request!  Although we would like to add Azure SQL Database support for our packages, we don't have this planned in the near term at this time. We will continue to collect customer demand to justify the commitment to support & maintain a high-quality Fivetran connector. Every upvote on this request increases the case to build it.

It is worth noting the our packages are open source so are more than welcome to create a PR adding in Quickbooks Azure SQL Database support and our team will help with getting it approved!