The word traction gets thrown around loosely, and it is worth being precise about, because it is the single thing that decides whether a founder gets funded. I keep telling people you do not get funded for an idea, you get funded for traction, and then they hear traction and picture signups, downloads, a spike of interest on launch day. That is not it. Traction is when you have users who come back and use the thing again and again.
I have sat with plenty of founders who will proudly tell me they got a few hundred signups from an ad campaign, and when you ask how many of those came back the following week, it is almost none. That is not traction, that is curiosity. A small number of people who keep coming back is worth far more than a big number who tried it once and never returned, because only the first group is telling you that you have built something people actually want.
Why investors trust it above everything
The reason investors weigh traction so heavily is that it is the one thing that is genuinely hard to fake. Anyone can have an idea, anyone can build something now, and anyone can buy a burst of signups. What you cannot manufacture is people voluntarily coming back, so that is the signal they trust. It is also why, until you have got it, your valuation is going to be weak, because you have not yet proven the only thing that really matters.
So look past the top-line number
If you want to know whether you have traction, do not look at the headline count, look at what happens after the first use. Do they come back. Do they use it again. Are they paying, or telling other people, or would they genuinely be annoyed if you took it away. Retention is the number that tells the truth, and it is the one worth putting near the front of your pitch deck.
Signups tell you people were curious. Retention tells you they were right to be. Chase the second one.