I work mostly in the travel industry. First client 10+ years ago came from a friend who worked as a manager in a large company and needed some special software built to improve his unit’s results - the existing contractor was not good and internal IT did not have time/skill.
Follow on work came from other people at that first client company who knew my work and went on to work at other companies.
Follow on work came from other people at that first client company who knew my work and went on to work at other companies.