A UGC section puts customer videos and photos on your store where shoppers are deciding.
Every Online Store 2.0 theme can host a UGC section through built-in sections, an app block, or a small custom Liquid section; you do not need a developer for the first two.
Get written permission from each creator before a clip goes on your store, and keep a record of it with the file.
Built-in sections are fine for a handful of static clips, but they have no product tagging, no analytics and no lazy loading, so they stop scaling fast.
Place the section where a shopper is still deciding: below the buy box on product pages, and below the hero on the home page.
It is a block on a page that shows customer-made content, usually short videos or photos of the product in use, with a link or tag to the product.
The full guide has the formats, the deadlines and the worked examples.