You can protect SQL Server databases using two types of backup jobs:
•SQL Server Plug-in backup jobs. Using the SQL Server Plug-in, you can back up one or more databases in a SQL Server instance. You can also back up SharePoint 2010 or 2013 databases. See Add a SQL Server Plug-in backup job.
•Image Plug-in backup jobs. Using Image Plug-in version 7.5 or later, you can create application-consistent backups for databases in one or more SQL Server instances on a server. See Add an Image backup job.
You can back up SQL Server databases in AlwaysOn Availability Groups using either the SQL Server Plug-in or the Image Plug-in. See Protect SQL Server databases in AlwaysOn Availability Groups.