82ad790e_and_Merchant_Services_Glossary__Definition
[Term] Front-End [Definition] 
The front-end is responsible for collecting card information in various forms (terminal, gateway, software) and processing it to conform to a specification the back-end can use. The front-end is a kind of interface between the user and the back-end, which allows merchant to request authorization for transactions. Example: Global Payments utilizes the front end Global East, Global Central, and Vital front-end. First Data utilizes the Omaha, North, Nashville, Memphis/Stratus, and Atlanta/Buypass front-end.
Credit Card Processing and Merchant Services Glossary
Definition