A Schengen visa is a short-stay visa that allows the holder to travel to any of the 26 Schengen countries for up to 90 days within a 180-day period. A multiple-entry Schengen visa allows the holder to enter and exit the Schengen area multiple times during the validity of the visa.
There are many benefits to obtaining a multiple-entry Schengen visa. For example, it can save you time and money if you plan on traveling to the Schengen area multiple times within a short period of time. It can also give you more flexibility in your travel plans, as you will not have to worry about applying for a new visa each time you enter the Schengen area.