How to find if the application uses the database snapshots in Management Studio
Sql server 2012 will go out of support next year July 2022.
For more recent sql server edition key points are HA &amp; DR features like AG.
https://docs.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-version-15?view=sql-server-ver15
Other good point are the index online rebuild feature, but also memory limit, read-ahead, partitions and data compression.