Experiment types & delivery
How this is scored
What can be tested and where: client-side changes through an editor, server-side and feature experiments through SDKs, multivariate and multi-page tests, and personalisation — judged on what the documentation shows rather than on the feature grid.
0 — Simple A/B split of one page element through a visual editor; no server-side option, no targeting beyond URL.
3 — Client-side A/B and split-URL tests with basic audience targeting, and no SDK or server-side delivery.
5 — Client-side and server-side experiments through documented SDKs for common languages, multivariate and multi-page tests, audience targeting on behaviour and attributes, and rule-based personalisation.
8 — Feature-flag-based experiments sharing one audience and metric model with web tests, mutually exclusive experiment groups, holdouts, edge or CDN delivery, and personalisation that can itself be tested against a control.
10 — One experimentation programme across every surface: web, app, server and edge from the same platform, experiment interactions managed, a documented experiment lifecycle from hypothesis to archived result, and a library of past results a team can search.
The Product Engineer
Standard A/B, dynamic and multivariate tests are documented, server-side delivery is real — the Engine API powers omnichannel experiences and the docs call a back-end integration the best option for flicker — and personalisation suites sit alongside the testing product. Beyond a bare SDKs entry in the API surface I found no public information on which SDK languages are documented, and nothing on feature flags, holdouts, mutually exclusive experiments or edge delivery, so this lands at the client-plus-server baseline rather than above it. 1 5 9 11 12