# Composable Commerce Developer Refresher 2026

Prepare to take your Certification Renewal exam by reviewing the key changes to Composable Commerce over the last 12 months.

**Learning objectives**

By the end of this course, participants will be able to:

- Describe the key changes and updates that have been made to Composable Commerce in the last 12 months.
- Identify how these changes affect the TypeScript and Java SDKs.
- Apply the updated features and functionalities of Composable Commerce using the TypeScript and Java SDKs.

**Agenda**

- [2025 Release Highlights](/certifications/composable-commerce-developer-refresher-2026/2025-release-highlights.md)
- [Product catalog](/certifications/composable-commerce-developer-refresher-2026/product-catalog.md)
- [Pricing and Discounts](/certifications/composable-commerce-developer-refresher-2026/pricing-and-discounts.md)
- [Carts and Orders](/certifications/composable-commerce-developer-refresher-2026/carts-and-orders.md)
- [Integrations and Extensibility](/certifications/composable-commerce-developer-refresher-2026/integrations-and-extensibility.md)
- [Connect](/certifications/composable-commerce-developer-refresher-2026/connect.md)
- [Performance and robustness](/certifications/composable-commerce-developer-refresher-2026/performance-and-robustness.md)
- [Other updates](/certifications/composable-commerce-developer-refresher-2026/other-updates.md)

**Prerequisites**

- [Composable Commerce Java Developer Training](https://commercetools.com/training/java-developer) Or [Composable Commerce JavaScript Developer Training](https://commercetools.com/training/javascript-developer)
- [Composable Commerce Developer Certification](https://commercetools.com/certification)

**Audience**

- Backend developers, technical team leads and technical solution architects who are seeking to renew their Certification.

## Related pages

- [Area overview page with navigation](/certifications.md)
- [Next page: Release highlights of 2025](/certifications/composable-commerce-developer-refresher-2026/2025-release-highlights.md)
- [Search documentation and API specs](/search.md)