Executive summary

A playbook for testing and scaling retail personalisation on incremental margin, with control groups sized to read.

What is inside

What the playbook covers

The playbook ranks personalisation use cases, writes hypotheses, sizes randomised control groups, reads out incremental orders and margin with finance, and scales only what pays, keeping permanent holdouts.

  • A ranked backlog of personalisation use cases
  • Hypotheses with measurement windows
  • Control-group sizing from baseline conversion
  • Readouts in incremental orders and margin
  • Scale, iterate or stop decision rules
  • Permanent holdouts and consent checks
  • Four working tools and the review record