What scripting language is primarily used for customization in Salesforce B2C Commerce?

The primary scripting language used for customization in Salesforce B2C Commerce is JavaScript. Salesforce B2C Commerce extensively leverages JavaScript for server-side scripting through its proprietary language, ISML (InterShop Markup Language) and for client-side interactions.

JavaScript allows developers to create dynamic and responsive e-commerce experiences by handling user interactions, manipulating data, and integrating various APIs and services effectively. It is also essential for customizing and extending the platform's capabilities through the use of controllers, middleware, and various frameworks that support the architecture of B2C Commerce.

The other languages mentioned, such as Python, Ruby, and PHP, may be popular in different contexts and platforms, but they are not utilized for customization within the Salesforce B2C Commerce ecosystem. This specificity to JavaScript highlights its role as an integral part of the development process within this platform.