With so many environments in place, so many servers running in the platform, there is a need for DevOps guys to be available 24x7. If someone wants to release a service, they require a DevOps guys to build a release and deploy it. In monolithic, any release is a big thing, happening perhaps months. Any failure will bring the whole platform down and increase the downtime. So, DevOps guys are always required. There are two ways to handle this issue.