The most valuable feature is its reliability and stability. The first version of BizTalk was released in 2000, and many companies still use it. It was stable until 2013 when we had support. In the 2016 version, they gave the option to connect to Azure Logic Apps and adapters. And in the 2020 version, we have direct connectivity with Azure AD. We have so many virtual tools... There are competitors now, such as MuleSoft, which is owned by Salesforce. However, as a Microsoft admin, I have a strong preference for BizTalk. It is easy for a beginner to learn BizTalk. I was trained in .NET technology, then I gradually learned BizTalk on my own. You can install VMware and get the community version of BizTalk to practice and do POCs [Proofs of Concept]. The development environment lets you use the admin console and test everything, so it's easy to see if BizTalk is a good fit. If you want to learn BizTalk for the first time, you can definitely do it.