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The retail operating system

One engine for every retail decision.

Most retailers run four or five separate tools.

Search in one tool, pricing in another, ads bolted on top — nobody owns the order shoppers see, and margin leaks between them. The Unified Decision Engine governs relevance, inventory, margin and sponsored demand in one pass, on every surface, including the AI assistants now doing the shopping.

Start with one surface. Leave the rest of your stack untouched.

Need one thing first? Start with our AI product recommendation engine or AI site search.

Fashion accessories brand on Shopify — PA onsite bundles vs Aftersell: an A/B test on Shopify | Particular Audience

+132.7% revenue per visitor and +105.6% conversion against a control running Aftersell, in a 10-day A/B test.

PA onsite bundles vs Aftersell: an A/B test on Shopify

+132.7% revenue per visitor and +105.6% conversion against a control running Aftersell, in a 10-day A/B test.

  • +132.7% Revenue per visitor
  • +105.6% Visitor conversion rate
  • +13.2% Average order value
  • +6.2% Units per transaction

A/B test, 11–20 September 2026, post-impression. PA bundles vs a control group running Aftersell. Bayesian probability PA is best: 100% for revenue per visitor, 93.2% for average order value.

An anonymised fashion accessories brand on Shopify split traffic between PA DiscoveryOS onsite bundles and a control group running Aftersell.

Post-impression conversion rose from 0.65% to 1.34% (+105.6%). Revenue per visitor rose from $0.86 to $1.99 (+132.7%), and average order value from $131.19 to $148.45 (+13.2%).

Value per unit increased 6.6% ($84.75 to $90.30) and units per transaction 6.2% (1.55 to 1.64). This was one 10-day test at one retailer, and results vary by store.