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 Skeptic
The captured documentation shows a genuinely hybrid programme — client-side variations layered on top of a single server-side experiment, network-layer delivery, feature flags with rollouts, and A/B, A/B/n and multivariate testing across web, mobile web, native apps and single-page applications — which clears the client-plus-server bar comfortably. What holds it back is silence: we found no public information on documented SDKs per language, holdouts, mutually exclusive experiment groups, or a searchable library of past results, and much of the breadth is suite copy rather than documentation. 3 8 9 10