This is a live GrowthStack workspace — not a mock. It's pre-loaded with 300 real customers across your acquisition channels (see the panel on the right), and every message you send runs against the real experimentation engine.
A good place to start: create an experiment, then generate a shopper and watch the engine decide whether they're assigned — the same call your storefront makes on every visit. Use a prompt below, or just ask in plain language.
This is the universe every experiment and segment you build runs against. The numbers below come from the real engine — the same distribution scales up to your live traffic in a POC.