Why is CAC important?
Calculating Customer Acquisition Cost(CAC) is crucial to understand how much money you are spending to acquire a new customer. CAC tells you the efficacy of different channels and help you determine which marketing channels are giving poor ROI and which ones you should be doubling down on.
How do you calculate CAC?
CAC is calculated by dividing the total cost spent on marketing and sales by the total number of customers acquired in the period of money spent.

For example,
If you spend $1200 on marketing and acquire 20 leads from a LinkedIn ads campaign, it means the customer acquisition cost in the particular channel is $60.