Contract-Centric Reliability Engineering in Cloud-Native Microservices: Integrating Pact-Based Testing, Observability, and Fault Injection for Distributed System Resilience . sqrd [Internet]. 2026 Jan. 31 [cited 2026 Feb. 24];6(1):199-206. Available from: https://sciencebring.org/index.php/sqrd/article/view/106