Public:Market Sizing

Read more about Marketing Sizing and ICP from ABM MasterClass Course > Chapter7 and Chapter8

To market to your audience you first understand your market. This is done by Market sizing.

Examples

1. Fast Food Restaurants space

2. Database as a Service space

Notice the 3 citations at the bottom of the screenshot

Full Deck : TalkingDB - Pitch for Eureka 2026

Tools

There are various online tools you can use to calculate the TAM, SAM, SOM

When writing SAM often entrepreneurs just assume some % of market they "wish" to capture (that's called top-down approach). Instead use the bottoms-up approach as shown in this here : Video: Market Sizing for B2B using LinkedIn Campaigns