Developers spend a significant amount of time writing and maintaining unit (integration) tests for their services. These tests demand ongoing maintenance as the service evolves, impacting developer productivity and release speed. HyperTest has developed a unique approach to automatically generating and updating mocks to efficiently test code and its dependencies. Integrated as an SDK on backend services, HyperTest constructs traces for all incoming requests and outbound calls, facilitating seamless regression testing during code changes. Over 100 product teams rely on HyperTest for bug-free development and enhanced developer experience.