Building a CRO Experimentation Program From Zero

Most teams that want a testing program buy a tool and stall, because the tool was never the constraint. The constraint is a backlog worth testing, a build path that does not need bespoke engineering per test, and an agreed bar for what counts as a win. Those three got built alongside the tooling, which is why the cadence held at four experiments every two weeks rather than spiking and dying. Thirty experiments ran in the first three months and eighteen concluded with a called result: six wins, four clear losses, eight that moved nothing. A third of concluded tests winning is roughly double what most programs report, and the four losses are the reason to trust the six wins. Each winner lifted seller lead conversion between 2.2% and 7.0% on its own surface, and because they ran in sequence, each measured against the baseline the previous winner had already set, they compound to about 25% across the three months. Two further tests shipped on their own merits while reading flat, which is a different decision and is recorded as one.