Cloud-Era Testing Infrastructure aims to integrate seamlessly into CI and local environments, enhancing dev velocity and maintaining transparency. With the shift towards microservices-oriented architecture, engineers face new challenges in creating tests that guarantee correctness and velocity. The solution leverages containers programmatically as part of the test suite, providing a consistent runtime environment and eliminating "but it works on my machine" issues. However, this approach introduces new challenges such as resource usage and performance issues. To address these concerns, the solution centralizes containers used in tenants, boosts their resources, implements cloud-native VPN solutions to gather dev environments, CI, and centralized containers under one LAN, and uses app-level multi-tenancy. The results show improved performance, visibility, ease of use, and long-term benefits such as shorter release cycles and increased scenarios shifted left towards development phases.