What makes a product demo work?

What makes someone watch a product demo and then try the product?

In a recent Y Combinator conversation about launch videos, Farza Majeed talks about treating every demo as a small launch. He and Aaron Epstein also discuss why a YouTube video with 20,000 views can do more for a product than a Twitter video with three million. I hear a useful question in that comparison: did the right people see what the product can do for them?

Show the moment

Imagine a tool that turns meeting notes into a task list. A demo could open with its dashboard, tour the settings, and end on a tidy list. Start with the notes: three names, two deadlines, and a sentence nobody quite understands. Run the tool. Show the tasks it finds and the one a person has to correct.

Now I know what the tool does. I can also see where I still need to pay attention. That is more useful to me than a minute of polished screens.

The same test works for almost any product. What was the person trying to do before opening it? What can they do afterward? Show those two moments clearly. If the result takes a long explanation, the video might be starting in the wrong place.

Count what happens next

Views can tell you that a video travelled. They cannot tell you whether anyone needed the product. A smaller audience might include the exact people who have the problem; a huge audience might simply enjoy watching a clever demo.

I care about what happens after watching. Did someone try the tool with their own notes? Ask whether it works with their team's meetings? Come back after the first use? The answer will differ by product, but it should be something closer to use than applause.

Give people another look

Majeed's advice also takes pressure off the idea of one perfect launch day. A product changes. A short demo can show a problem it now handles better, or a feature users asked for. That gives people a reason to look again.

My test is simple: show a change that matters to someone using the product. If all I can show is that a button moved, I can wait. If a task that used to take ten steps now takes two, I have a story worth showing.

A demo has worked if someone closes the video, opens the product, and tries it with their own messy notes.