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Bringing people and ideas together and assuring they work well is what good leaders do. And that’s what Daniel Lynch did throughout his career.

After earning a master’s degree in mathematics, Lynch worked in the United States Air Force, where he learned to program. That skill set led him to positions at Lockheed Martin and then Stanford Research Institute, where he encountered the ARPANET. The precursor to the internet inspired his passion for computer networking, and he helped replace the ARPANET’s NCP protocol with TCP/IP, offering broader compatibility and networking.

Nonetheless, early internet developers proliferated a variety of incompatible applications and protocols. To get them all talking to each other, Lynch founded Interop, an annual conference that launched in 1986 with internet pioneer Vint Cerf as the keynote speaker. The show was an instant success, providing a much-needed space for direct communication among industry peers.

One of the early draws of Interop was the InteropNet, a local-area network (LAN) consisting of 120 miles of wires connecting 7,000 machines. With each of the show’s vendors being part of the InteropNet, it was an opportunity to test how hardware and software from different manufacturers would or could talk to each other. Interop also published 117 issues of a monthly technical journal, ConneXions (1987–1996).

Interop was sold to Ziff-Davis in 1991 and merged with their Networld event in 1994; the conference became known as Networld+Interop until 2005, when it again adopted the name Interop. The show hit its peak in 2001 with 61,000 attendees.

In 1994 — one year before he left Interop, and four years before PayPal was founded — Lynch co-founded CyberCash, an online payment service. CyberCash filed for bankruptcy in 2001 and was acquired by VeriSign — then, in 2005, by PayPal.

Lynch was inducted into the Internet Hall of Fame in 2019. He died at 82 from kidney failure.