Two campaigns can have the same cost per lead and completely different results. One brings people ready to buy; the other brings people who never answer the phone. You only see the difference when every lead keeps its source all the way to the sale.
Keep the source on every lead
Store the platform, campaign and form with each lead the moment it arrives. For website forms, capture UTM parameters automatically so nobody has to type them in.
Track outcomes, not just arrivals
Record what happened to each lead: contacted, qualified, converted or lost, and why. With outcomes attached, you can compare campaigns by customers won, not just leads collected.
Turn it into better client meetings
Instead of "we delivered 300 leads", you can say "the search campaign brought fewer leads but twice as many customers, so we suggest moving budget there". That's the conversation that keeps clients for years.