How to Use the Measurement Protocol

A measurement protocol is a set of rules which the application must follow in order to send raw hit data directly to a GA server.
What Is a ‘Measurement Protocol Request’?
In order to make an HTTP request to the GA server (for sending in the raw hit data directly), the HTTP request needs to be formatted according to the measurement protocol. The formatted HTTP request is called the measurement protocol request.

Link: https://dzone.com/articles/working-of-the-measurement-protocol?utm_medium=feed&utm_source=feedpress.me&utm_campaign=Feed%3A+dzone%2Fwebdev