GTM lesson from working with a YC startup: ICP isn’t found, it’s tested
Title: GTM lesson from working with a YC startup: ICP isn’t found, it’s tested
I was working closely with a YC-backed company, and one thing that stood out in their GTM approach was how unstructured it actually was in the beginning.
There was no rigid framework, no overthinking about personas or perfect ICP decks.
Instead, they focused on speed + experimentation.
For ~6 months, they kept:
- Testing different markets
- Positioning the same product in slightly different ways
- Running continuous A/B tests on messaging, outreach, and use cases
The goal wasn’t to “define the ICP” upfront.. it was to discover it through data.
Some segments looked promising but didn’t convert.
Some random niches unexpectedly showed strong pull.
Over time, patterns started emerging:
- Who actually converts
- Who sees immediate value
- Who sticks around
That’s when they doubled down.
Big takeaway for me:
Your ICP is not a hypothesis to perfect in a doc.. it’s something you earn through iteration.
Curious how others here approach ICP discovery.. structured frameworks vs brute-force testing?