ZECH
Solution · Growth

Recommend what fits each customer, and prove it with a controlled test.

Recommendation and ranking models use browsing, purchase and catalog data to order products, content and offers for each visitor, within merchandising rules and consent settings — and every change is measured against a holdout.

The workflow
  1. 01Collect events and catalog
  2. 02Generate candidates and rank
  3. 03Apply business rules
  4. 04Set rules and review
  5. 05Test against a holdout
Who uses it

The workflow

E-commerce, digital product and CRM teams who decide what customers see on the site, in the app and in email, and the merchandisers who set rules for it.

Today
  • Every visitor sees the same homepage and the same "you might also like" list.
  • Merchandisers hand-curate rails that go stale within days.
  • Email segments are broad, so most customers get offers that do not fit.
  • Personalization vendors report uplift that nobody can verify independently.
  1. Collect events and catalog

    System

    Consented behavioral events, purchase history and catalog attributes are collected into a shared feature store.

  2. Generate candidates and rank

    AI

    Models select candidate items for each customer and context, then rank them by predicted relevance.

  3. Apply business rules

    System

    Stock, margin, exclusions and merchandising priorities are applied before anything is shown.

  4. Set rules and review

    Person

    Merchandisers adjust rules, pin or exclude items, and review what each segment is being shown.

  5. Test against a holdout

    Person

    Each change runs as an experiment against a control group, and results are reviewed before full rollout.

What to measure

Where people stay in control

Merchandisers control rules, exclusions and campaign priorities, and can see what any segment is shown. New models and major changes go out only after a controlled test is reviewed. Customers who have not consented to tracking get non-personalized defaults.

  • Conversion and revenue per visitor against a holdout group
  • Click-through on recommendation placements
  • Catalog coverage, meaning how much of the range gets shown
  • Opt-out and unsubscribe rates

Data and integrations

  • Behavioral event data with consent status
  • Order history and customer identifiers
  • Product catalog with attributes, stock and margin
  • Experimentation or feature flag tooling

Realistic boundaries

  • New customers and new products have little history, so defaults and content-based signals carry more weight at first.
  • Personalization only uses data customers have consented to, and sensitive attributes are excluded.
  • Results are reported from your own tests; we do not quote uplift figures in advance.

Questions buyers ask

Enough interaction history to learn from — usually months of events and orders across a reasonably active catalog. With less, simpler approaches such as popularity by category and content similarity often perform as well, and we will recommend those first.

Every change runs against a holdout group that sees the non-personalized experience, so the difference is measured on your own traffic. Our analytics work sets up the reporting.

Map this workflow with us.

Tell us about the workflow or product. We reply with questions, a suggested first step and who would work on it.