A custom theme is designed and developed specifically for a brand rather than using a pre-built template.

Benefits include: Unique branding Better performance Advanced functionality Competitive differentiation

Shopify does not officially support child themes like WordPress. Developers usually duplicate themes before making major changes.

Theme duplication creates a backup copy before customization or updates.

Theme versioning tracks changes and updates to ensure safe development.

Shopify CLI helps developers build, test, and deploy Shopify themes efficiently.

GitHub integration allows developers to manage theme code through version control.