I have SQL server 2008 R2 running on my prod server. I heard Mainstream support for this product is already over an extended support going to over on 7/9/2019. I decided to upgrade to new version. Now SQL Server offering two types of licensing. Which one needs to choose? And how these Licensing will work?
SQL Server Standard Edition (Server/CAL Licensing)
SQL Server Standard Edition (Core-Based Licensing)