How do I know if my marketing is actually working?

Most founders answer this question by opening a dashboard, seeing traffic and followers climb, and feeling reassured. That's the trap. Those numbers can go up for months while revenue stays exactly where it was. The real test is narrower and harder: pick your last five customers and try to name the marketing activity that produced each one. If you can't, you don't have a measurement problem to solve later. You have one right now.

What's the fastest way to tell?

Run the trace test. Take a real, closed customer and walk backward: what was the last thing that brought them in, and the first? If the honest answer is "a referral, I think" or "they just found us," your marketing isn't producing measurable demand, it's decorating the demand you'd have gotten anyway. A working system lets you answer that question in seconds, from your CRM, without guessing.

What's the difference between activity metrics and revenue metrics?

Activity metrics measure motion; revenue metrics measure money. Traffic, impressions, followers, and clicks are activity: they tell you something happened. Leads, qualified pipeline, and closed customers tied to a source are revenue: they tell you something paid off. The reason activity dashboards feel so good is that they almost always go up. The reason they're dangerous is that they can go up while your bank balance doesn't. If a metric can improve without any customer ever paying you, it's activity, and it's not the one to run your decisions on.

What's the minimum setup to actually measure it?

Less than the vendors want you to buy. You need three things, in this order:

• A CRM as your single source of truth. One place where every lead and customer lives, with the source recorded when they arrive. Not a spreadsheet, not someone's inbox.
• UTM discipline on every link. Every campaign, email, and post tags its links so the source is captured automatically instead of reconstructed from memory.
• One revenue-attributed view. A single report that ties source all the way through to closed revenue, so you're looking at what produced customers, not what produced clicks.

That's the floor. It's cheap, it's boring, and it's the exact thing most firms skip, which is why they can fund the spend but never measure it. In the Demand Engine, this is the Prove stage, and it's the one that makes every other stage improvable.