Managed Service Accounts are a Windows feature introduced in Windows Server 2008 R2 for increasing the security of non-user service accounts. Managed Service Accounts, shortened as MSAs, have an automatically-managed, complex password that removes the requirement of manually dealing with password rotation and security. In Server 2012, this feature was enhanced to group Managed Service Accounts, or gMSAs, which allows the use of these accounts on multiple servers at once.
by Mitchell Grande