Development + Operations
Devops Stages :
Continuous Delivery / Continuous Deployment
If the deployment on prod servers are done automatically in the pipeline, it's called Continuous Deployment. If it's deployed to test servers first, passes and then deployed manually to the Prod server, it's called Continuous Delivery.
Continuous Monitoring :
observe and detect compliance issues and security threats during each phase of the DevOps pipeline. Tools : Prometheus, Nagios, ELK stack