“I didn't build any product, I didn't have anything. I just had a glimpse of what a product can look like in a landing page, and people were signing up from left and right.”

Ship a landing page first — let strangers prove demand before you write code

Real validation comes before the product, not after. Ship a landing page that shows what the tool could look like, then watch whether strangers sign up unprompted. Signups from a page alone are the green light to actually build.