Strategy and product
TAM
Total addressable market: everyone who could possibly buy this kind of product, anywhere, usually given as money per year. For project-management software, every organisation in the world that pays for it.
You'll hear it as
The TAM is billions, but that's every company on the planet.
Why it matters to you.
A huge TAM is easy to quote and proves nothing on its own. It's the start of the calculation, not the answer.
Videos.
No video mentions TAM by name yet. These are on the same topic, Business & startups.