RFC stands for Remote Function Call. Remote Function Call is an interface for communication between a SAP System and other SAP or third-party compatible system. Remote function CALLS may be associated with SAP software and ABAP programming and PROVIDE a way for an external program (written in languages such as PHP, ASP, Java, C, C++) to use data returned from the server or insert data into server records. 

For business applications, sometimes it becomes necessary to communicate and exchange information (in predefined formats) with other SAP Systems or non-SAP Systems (Example Visual Basic to SAP, Java to SAP etc.). To enable this communication, SAP has PROVIDED us with a mechanism called RFC, which stands for 'Remote Function Call'.

RFC’s can be used for external integration with SAP, such as PHP/SAP, Flex/SAP, Ruby/SAP, etc.

In SAP, RFC Interface system is used for setting-up RFC connections between different SAP systems, and also between an SAP and an external (Non SAP) system.

Say for example, If you have VB system which has your company's Inventory Management & you have FICO / SD / MM / PP in you SAP system. Your VB Inventory MGMT system wants to send or receive data/update database in SAP. This can be done use RFC.

Although an RFC associated with communication between two different systems, it can also be created for communication within a system.

RFC’s can be created or maintained via transaction code SE37. RFC calls a function to be executed in a remote system. SM59 transaction code can be used to define and maintain the logical destination of RFC.

RFC stands for Remote Function Call. Remote Function Call is an interface for communication between a SAP System and other SAP or third-party compatible system. Remote function calls may be associated with SAP software and ABAP programming and provide a way for an external program (written in languages such as PHP, ASP, Java, C, C++) to use data returned from the server or insert data into server records. 

For business applications, sometimes it becomes necessary to communicate and exchange information (in predefined formats) with other SAP Systems or non-SAP Systems (Example Visual Basic to SAP, Java to SAP etc.). To enable this communication, SAP has provided us with a mechanism called RFC, which stands for 'Remote Function Call'.

RFC’s can be used for external integration with SAP, such as PHP/SAP, Flex/SAP, Ruby/SAP, etc.

In SAP, RFC Interface system is used for setting-up RFC connections between different SAP systems, and also between an SAP and an external (Non SAP) system.

Say for example, If you have VB system which has your company's Inventory Management & you have FICO / SD / MM / PP in you SAP system. Your VB Inventory mgmt system wants to send or receive data/update database in SAP. This can be done use RFC.

Although an RFC associated with communication between two different systems, it can also be created for communication within a system.

RFC’s can be created or maintained via transaction code SE37. RFC calls a function to be executed in a remote system. SM59 transaction code can be used to define and maintain the logical destination of RFC.