Jeff Horing co-founded Insight Partners in 1995 with the then-contrarian belief that "software is the best business in the world" and has built one of the largest pure-play software investing franchises by staying focused on that thesis for three decades. He runs Insight with an unusually private-equity-like operating model that includes data-driven sourcing, structured playbooks, and heavy emphasis on value-creation teams that actively help portfolio companies scale operations rather than just providing board-level advice.