An interchange is a location where two things meet, usually perform some kind of exchange, and possibly go on their ways again. It is most commonly used in two contexts:

• Transportation:
  • A collection of ramps, exits, and entrances between two highways is an interchange.
  • A Cross-platform interchange is a connection between two lines of a metro system.
• Computers:
  • Electronic Data Interchange is the computer-to-computer exchange of business data in a standard format.
  • The Peripheral Interchange Program was software to enable computers to exchange files.
  • ASCII is the American Standard Code for Information Interchange.
  • Interchange software is an open source application server for electronic commerce.