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

Examples

1. Security camera

TAM(Total Addressable Market) should be average revenue per customer/total customers revenue or target customers in the market. TAM calculation can be taken as an exercise for the clarity on the future roadmap, check the demand of the product and profit for future production.

TAM=Total number of buyers for any product. For example: security cameras

ICP= Wifi enabled security camera /Bluetooth cameras/Wired cameras

SAM=Home owners/Office buildings/Entertainment place/Bank etc

SOM=Wired indoor cameras

2. Fast Food Restaurants

Tools

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

Market Sizing for B2B using LinkedIn Campaigns