BizTalk Server 2016 Feature Pack 1 provides new features and support for additional platforms. It supports Windows Server 2008 R2 until January 2023, SQL Server 2008 R2 until July 2022, and extends support for older platforms like SQL Server 2008 and 2005 until mid-2016. The feature pack introduces new capabilities for integration with Logic Apps, API Management, and the Enterprise Integration Pack.