End To End

What Does End To End Mean?
A term used in many business arenas referring to the beginning and end points of a method or service. End-to-end theory embraces the philosophy that eliminating as many middle layers or steps as possible will optimize performance and efficiency in any process. 

Investopedia explains End To End
An example of end-to-end processes include directly connecting buyers and sellers in the ecommerce arena or in manufacturing. This occurs when one company provides a service to another in which it manages all aspects of design and production of a particular product - end product directly to end user.