Mirrord for CI allows teams to run tests against their shared staging or pre-production environments in Kubernetes without the hassle of deploying code or setting up separate test environments. This approach enables faster, more cost-effective testing that closely mirrors production conditions. By connecting CI runners directly to existing Kubernetes clusters, mirrord provides real-time feedback, significantly reducing CI runtime by about 50%. The process involves three simple steps: first, the CI runner connects securely to the Kubernetes cluster; then, the test suite runs with actual services and traffic in a safe manner; finally, developers can ship features quickly, avoiding last-minute surprises in production. Unlike traditional methods that rely on mock environments or ephemeral clusters, which are slow and expensive, mirrord eliminates setup time and infrastructure duplication. It operates with real services, configurations, and network behaviors, catching integration issues early in the development cycle. The article also highlights a 30-minute demo that covers the technical workings of mirrord, including syscall interception, isolation, and security features. Attendees can expect insights into cost savings related to ephemeral clusters and guidance on setting up their first CI test in a real environment. Overall, mirrord for CI addresses common pain points in continuous integration by streamlining the testing process and enhancing the accuracy of results.