Procurement is a complete process to obtain goods or services from a requisition (preparation and processing) through to receive and approval of the invoice for payment.
In oxford dictionaries, procurement is the action of obtaining or procuring something.
In the form of corporate organization, procurement is often referred to as purchasing and supply, which involves all of those management functions to ensure the organization be able to obtain goods and services with cost effectively from outside sources conformed to the needs of users.
The procurement process commonly involves: