Explanation
Deploy, verify, monitor, and respond are all activities of Continuous Deployment. Continuous Deployment is one of the elements of the Continuous Delivery Pipeline, which is a key enabler of Agile Product Delivery.
Continuous Deployment means automatically releasing every update to a production environment or a staging environment that is identical to production. Continuous Deployment involves four activities: deploy (releasing the solution to the target environment); verify (ensuring that the solution meets the quality standards and acceptance criteria); monitor (collecting feedback and data on the solution performance and usage); and respond (taking actions to improve or fix the solution based on the feedback and data). References: Agile Product Delivery, Continuous Delivery Pipeline, Continuous Deployment