When migrating from CRM 2015 to 2016, make sure to apply CRM 2015 update rollup 1 before the upgrade and familiarize yourself with the upgrade process for a smooth transition.
Make sure CRM 2015 update rollup 1 has been applied before upgrading to CRM 2016.
CRM 2016 has many improvements over it's predecessors, including Power BI integration, improved navigation, and the new Outlook extension.
The procedure for upgrading CRM 2015 to 2016 is: