This document is a guide that outlines essential technical SEO practices for ecommerce websites. It details various components necessary for optimizing site performance and search visibility. The checklist begins with fundamental practices such as adding a robots.txt file, linking an XML sitemap, and ensuring internal linking facilitates easy crawling. It emphasizes the importance of site architecture, recommending a pyramid structure and clean URLs. Additionally, it addresses page speed and Core Web Vitals, suggesting methods like image compression and lazy loading. Mobile optimization is also covered, highlighting the need for responsive design and fast loading times. The document further discusses structured data implementation using JSON-LD and monitoring techniques to track organic traffic and SEO performance. It concludes with recommendations for running structured SEO tests to gauge the effectiveness of optimizations. The checklist serves as a comprehensive resource for improving the technical aspects of ecommerce SEO.