Online Store 2.0 is Shopify’s modern theme architecture that introduces flexible sections, app blocks, improved performance, and easier customization.

Sections are customizable content blocks that can be added, removed, or rearranged within pages.

Blocks are individual components inside sections, such as text, images, videos, buttons, and product cards.

Templates define the layout structure for different page types such as: Product pages Collection pages Blog pages Cart pages

Liquid is Shopify’s templating language used to display dynamic store content.

Liquid enables developers to create dynamic pages that display products, collections, customer information, and store settings.

Key folders include: Layout Templates Sections Snippets Assets Config Locales