Advanced SEO Techniques for E-commerce Sites

Optimizing an e-commerce site for search engines can be more complex than for standard websites. How can developers and marketers improve SEO specifically for e-commerce platforms? Discuss strategies such as optimizing product pages for specific keywords, improving site speed, and implementing structured data markup for rich snippets. What are the best practices for managing large product inventories, handling out-of-stock items, and ensuring that product reviews and ratings contribute to better search rankings? Additionally, how can developers avoid common pitfalls, like duplicate content from product variations or poor URL structures?