MIS full form and meaning
MIS stands for Management Information System. In its original sense it is the whole arrangement by which a company collects data from its daily operations, stores it, and turns it into information that managers can act on. The sales team's enquiries, the factory's output, the accounts team's collections: an MIS gathers these and presents them in a form somebody can read in a few minutes.
In Indian offices the term has taken on a second, narrower meaning. When a manager says “send me the MIS”, they are not asking about a system. They are asking for the recurring report: the sheet that shows what happened yesterday, last week or last month. Both meanings are correct, and most people searching for the full form have met the second one.