Jenkins is an open-source automation server that helps automate the parts of software development related to building, testing, and deploying, that facilitate continuous integration and continuous delivery (CI/CD). Since it's an automation tool for CI/CD, resource contention issues will slow the Jenkins performance, delaying builds, and deployments. These issues affect customer trust, to avoid which monitoring Jenkins is important.
You can also manage appropriate Jenkins logs for each plugin and correlate the metrics and issues from the same console.