Checkly is expanding its monitoring capabilities to include TCP-based checks, allowing developers to monitor network-level resources and services that don't give full HTTP responses. This move shifts the responsibility for network service availability leftward, requiring developers to test and monitor their networks as part of their application development workflow. Checkly's new TCP monitors offer features such as SSL verification, setup and cleanup scripts, deep configuration options, and integration with existing monitoring tools like PagerDuty. With this addition, Checkly provides a more comprehensive monitoring solution that empowers developers to catch problems early and keep their entire system running smoothly, making it easier for teams to stay ahead of issues and maintain reliable applications.