Technical debt is the software equivalent of a loan. To ship faster, a team takes a shortcut, a quick fix, a skipped test, a design that works for now but not for later, and gains speed today in exchange for a cost that comes due, with interest, in the future. Like financial debt, it is a tool that can be smart or ruinous.
Some technical debt is deliberate and wise: shipping a simpler version now to hit a deadline or test an idea, planning to improve it once you know the idea works. Some is accidental, accumulating through rushed decisions, changing requirements, or code that made sense once and no longer does. Either way, it builds up as the difference between the code you have and the code the problem now needs.
The interest on technical debt is paid in slowed development: every new feature takes longer because it must work around the shortcuts, bugs multiply, and the code becomes harder and riskier to change. Left unpaid long enough, debt can reach a point where the team spends most of its energy fighting the codebase instead of building, which is how products calcify and stall.
The goal is not zero debt, which would mean never shipping, but managed debt: taking it on deliberately, tracking it, and paying it down before the interest compounds. Healthy teams refactor continuously and treat debt as a real liability on the books, not an invisible one. Ignoring it is how a fast start becomes a slow crawl.
Borrow deliberately, and pay it down before it compounds.
This is general educational information about building software, not specific technical or business advice.