A bus design that directly connects video circuits with the microprocessor and improves performance.

An interface developed primarily to permit video adapters a higher bandwidth expansion bus to handle increasing graphics demand by users.  VLB was extremely popular because of its 32-bit data path, higher speeds (up to 40 MHz) and its integration with the previous 16-bit ISA slot, permitting backwards compatibility (which Micro Channel Architecture did not.)

See VLB.