Keydata was located in Technology Square in Cambridge, Massachusetts (later moved to Watertown, Massachusetts), where Project MAC, the seminal venture sponsored by MIT which saw the development of MULTICS one of the earliest time sharing software systems.

This was initially installed on a modified IBM System/360 Model 40 computer with the informal name of the "Cambridge box."

The coincident location of the nexus of time sharing and virtual memory developers in Cambridge resulted in a heady climate of information technology state-of-the-art knowledge sharing which Keydata profited by, although its UNIVAC computer architecture permitted only software-based implementations.

The online transaction management application was monolithic, written in a proprietary high-level language; it consisted of hundreds of thousands of lines of code.

As minicomputers arrived in the market, Keydata tried to adapt their applications to the DEC's VAX 780 and the Hewlett-Packard 3000 series, but this proved impossible due to the complexity of the project and the lack of resources.