This document provides best practices for creating frictionless ecommerce experiences across different areas of a retail site, including the menu, search, categories/products, homepage, checkout, and forms. It outlines recommendations for each section to improve the user experience and metrics like bounce rate and conversion rate. The recommendations are based on analyzing hundreds of retail sites to identify universal UX elements that help deliver seamless shopping experiences. All recommendations should be A/B tested. The document also highlights specific retailers that exemplify best practices for each area.