AUGMENTT VP of Marketing | Formerly Instruqt, Mural, Twitter, Anheuser-Busch InBev • 11mo
An easy way to calculate your TAM, that I would also consider to be the PMM-led approach, is through defining your ICP:
Clearly define your ICP so it's easy to understand which prospects/customers are in or out.
Research the number of potential customers within your ICP.
Multiply the number of potential customers by your ICP ACV (or an estimate thereof).
The reason why I say this is a PMM-led approach is that PMM should lead the way in defining your ICP.