Sections
The top-level container that defines a reusable component, like a hero banner or product slider. Sections can be dropped into any Shopify theme.
Layouts
Each section contains one or more layout options—these control the structure, such as a single-column, grid, or split layout.
Groups
Groups organize related content or functionality within a layout. They let you bundle settings or blocks together (e.g., “Card”, “Image Background”) for clearer content management.
Blocks
The most granular unit in Flexi. Blocks are individual content elements—like headings, images, buttons—that can be mixed and matched inside groups.