Which CEO of IBM led the development of the System/360 in the 1960s?

Which CEO of IBM led the development of the System/360 in the 1960s? Thomas Watson Jr. led IBM as it developed the System/360 family.

Watson became IBM’s president in 1952 and its chief executive in 1956, succeeding his father, Thomas Watson Sr. He pushed the company beyond its traditional punched-card business and toward electronic computing, hiring engineers and expanding research and development.

The System/360 was announced on April 7, 1964. It was a bold “family” of compatible computers, allowing customers to move to larger models without rewriting all their software. Gene Amdahl served as chief architect, Fred Brooks managed the project, and Bob Evans helped organize the development effort, but Watson supplied the executive backing and accepted the enormous financial risk.

A common mix-up is confusing Watson Jr. with Watson Sr., who built IBM’s sales culture and led the company until 1956. John Opel was also important to the System/360 launch, managing its commercial release, but he was not the IBM CEO who authorized and oversaw the project.