# Category queries best practices

Learn how to build website navigation using the Composable Commerce Categories API.

**Learning objectives**

After completing this module, you should be able to:

- Explain how to use Categories in Composable Commerce to build a localized and scalable mega menu.
- Use the Composable Commerce SDK and APIs (REST and GraphQL) to query and transform Category data into a structured navigation tree.
- Assess and implement performance and caching strategies to ensure scalable and responsive navigation experiences.

**Agenda**

- [Understand the Categories API](/learning-implement-product-discovery-and-presentation/category-queries-best-practices/understand-the-categories-api.md)
- [Build a navigation menu using the SDK](/learning-implement-product-discovery-and-presentation/category-queries-best-practices/build-a-navigation-menu-using-the-sdk.md)
- [Performance and scalability](/learning-implement-product-discovery-and-presentation/category-queries-best-practices/performance-and-scalability.md)
- [Learning check](/learning-implement-product-discovery-and-presentation/category-queries-best-practices/learning-check.md)

**Prerequisites**

- [Categorization](/learning-model-your-product-catalog/categorization/overview.md) module
- [Developer Essentials](/learning-composable-commerce-developer-essentials) learning path

**Audience**

- Developers tasked with building a navigation menu using Composable Commerce.

## Related pages

- [Area overview page with navigation](/learning-implement-product-discovery-and-presentation.md)
- [Next page: Understand the Categories API](/learning-implement-product-discovery-and-presentation/category-queries-best-practices/understand-the-categories-api.md)