The developers versus operations dilemma

In a non-DevOps culture, developers are in charge of developing new products and features and maintaining the existing code, but ultimately, they are rewarded when their code is shipped. The incentive is to deliver as quickly as possible. On the other hand, the operations team, in general, is responsible for maintaining the uptime of the production environment. For these teams, change is a negative thing. New features and services increase the risk of having an outage, and therefore, it is important to move with caution. To minimize the risk of outages, operations teams usually  have to schedule any deployments ahead of time, so that they can stage and test any production deployment and maximize their chances of success. It is also very common for enterprise software companies to schedule maintenance windows, and, in these cases, production changes can only be made a few times a quarter, half-yearly, or once a year. Unfortunately, many times, deployments won't succeed, and there are many possible reasons for that.