Concepts related to working between Gatsby and other systems: CMS, build & hosting, e-commerce, analytics, etc.
At their core, most medium-sized and large Gatsby websites are backed by a so-called “headless CMS”; choosing the best one for your project is a key architectural decision.
E-commerce includes both core (products, catalog, cart/checkout) and additional functionality (accounts, promotions, reviews, etc).
By taking advantage of the benefits of static content, Gatsby sites get a significant out-of-the-box boost. There is still work to do for you, though.
Gatsby helps you create websites that work for everyone, with defaults that bake in web accessibility as well as performance optimizations.