We typically see one Microsoft Server update roll-up released each month.  These are provided by Microsoft on a regular basis, then tested and packaged by Vertical for deployment on Wave.  Note that these are only provided for actively supported operating systems, which means you’ll need to be on the current version of Wave to apply these updates (currently Wave 7.0, which runs on Windows Server 2016).

In addition to the regular Microsoft Server update roll-ups, Vertical releases Wave-specific updates and hotfixes as needed.  These provide feature enhancements and bug fixes.