Jobs to Be Done, popularized by Clayton Christensen, reframes product strategy around the underlying 'job' a customer is trying to get done. The classic example: people don't buy a quarter-inch drill; they hire it to make a quarter-inch hole, and might equally hire a hole-punching service or a stick-on shelf bracket.
Applied well, JTBD changes how teams pick competitors (anything that does the job, not just things in the same category), how they prioritize features (only those that advance the job), and how they segment users (by job context rather than industry).