Trend SEO may get a hit, but a pro maps intent, tunes pages, fixes product...

https://telegra.ph/How-Do-I-Improve-Crawl-Efficiency-on-a-Large-Ecommerce-Catalog-10-15

Trend SEO may get a hit, but a pro maps intent, tunes pages, fixes product templates at scale, saves crawl time, links well, and checks sales