Some room for improvement means... it's legacy. It's an on-premises system, requiring physical servers for deployment. This is different from Azure; you don't need any servers with Azure. If you have a subscription, you can do whatever you want. There are unit restrictions based on the environment (like non-production vs. production) in BizTalk. You need physical servers and databases. In Azure, those are not required – it's all in the cloud. Now, we have the option of integrating accounts and the On-Premises Data Gateway to connect on-premises BizTalk with Azure. But the trend is moving towards Azure. Not everyone wants a hybrid model. Companies are still going with hybrid scenarios, but they want both BizTalk and Azure. See, whatever you can do in BizTalk, you cannot do the same things the same way in Azure. One example is tracking. In BizTalk, especially for production environments, messages are easily stored within the MessageBox database. Support can assist in retrieving them directly. It's not as easy to track in Azure – everyone can potentially access it, and even reprocessing is different. Logic Apps have a preview mode. If a Logic App is stuck at a particular action, you can resubmit from there. Microsoft is still making improvements – I don't know when they'll have general availability for these features. However, tracking and message storage are more complex in Azure. We have to use Azure Blob storage for archiving, whereas in BizTalk, it's a built-in feature of the MessageBox DB. If you need to debug at any point, you can do so easily in BizTalk. This is one aspect influenced by the on-premises nature of BizTalk. Since everything is moving to the cloud, Microsoft will also end support for BizTalk Server 2030 – there won't be any further support. I don't think they'll release any new versions. 2020 was the last, and it's been four years. After the end of support, I think companies currently using BizTalk will move to Azure or another cloud-based integration technology.
