Name the main framework used for SFCC customizations.

The main framework used for SFCC (Salesforce Commerce Cloud) customizations is ISML, or Interchangeable Space Markup Language. This templating language is specifically designed for creating dynamic web pages within the Salesforce Commerce Cloud ecosystem. ISML allows developers to build reusable templates, which is essential for efficiently managing the content and structure of e-commerce sites.

Using ISML, developers can easily integrate server-side logic with HTML, enabling the creation of personalized and dynamic user experiences. The use of ISML enhances the flexibility and maintainability of code, allowing for better control over rendering content based on various conditions or user interactions.

In contrast, HTML is a standard markup language used for creating web pages but does not provide the dynamic capabilities required for customization in SFCC. XML is primarily used for data representation and does not serve as a templating framework. CSS is utilized for styling and layout but does not handle the logic and server-side rendering that ISML facilitates. Thus, ISML stands out as the primary choice for developers working with Salesforce Commerce Cloud.