Marketplace Engineering Two-Sided Personalisation Best Practices Comprehensive guide for designing, building and improving personalisation and recommendation systems in two-sided trust marketplaces on AWS Personalize. Contains 49 rules across 9 categories, ordered by cascade impact on the personalisation lifecycle, plus two playbooks for planning a new system from scratch and diagnosing an existing one. When to Apply Reference this skill when: - Designing the event schema and tracking for a new recommender system - Choosing an AWS Personalize recipe (USER PERSONALIZATION v2, SIMS, PERSONALIZE…