What Does Add-In Mean?
An add-in is a software program that expands the capabilities of bigger programs. It is a term commonly used by Microsoft and other platforms which have additional functions that can be added to primary programs. An add-in has specific but limited features that require only minimal memory resources.
Techopedia Explains Add-In
An add-in should not be confused with an add-on, which is a hardware term for an expansion unit.
