The primary language used for Shopify theme development is Liquid, Shopify's own templating language.
Yes, Shopify Developers can build mobile apps that integrate with Shopify stores, either through custom development or using platforms like Shopify's Mobile Buy SDK.
Developers optimize store performance by minimizing theme code complexity, optimizing images, leveraging browser caching, and using Shopify's built-in speed-enhancement features.
Latest trends include headless commerce, custom app development, integration of AR/VR, focus on sustainability, and the use of AI for personalized shopping experiences.
Version control is important for managing code changes, collaborating with other developers, and ensuring that updates can be deployed safely without affecting store functionality.