With SQL Server 2012 Microsoft introduced the AlwaysOn Availability Group feature, and since then many changes and improvements have been made. This article is an update to our previous article https://www.sqlrx.com/steps-for-installing-sql-server-alwayson-availability-groups/ , and will cover the prerequisites and steps for installing AlwaysOn in your SQL Server 2019 environment.
Click through for a checklist of pre-requisites and installation + configuration steps.