what is outsourcing??????? plzzz explain

In business, outsourcing is the contracting out of a business process to a third-party. The term "outsourcing" became popular in the United States near the turn of the 21st century. Outsourcing sometimes involves transferring employees and assets from one firm to another, but not always.^[1] Outsourcing is also used to describe the practice of handing over control of public services to for-profit corporations