Continuous Delivery is a software engineering approach. This approach helps reduce the time, cost and risk of making changes by allowing more incremental updates. The repeatable implementation process is important for continuous delivery. With continuous delivery, each code change is generated, tested and then pushed into a test or trial environment without production. With continuous delivery, you can decide to publish daily, weekly, every two weeks or whatever fits your company's requirements. However, if you really want to get the benefits of continuous delivery, you must implement it in production as soon as possible to ensure you launch small batches, which are easy to solve in the event of a problem.
So now we come to continuous delivery. If DevOps is about accelerating the delivery of new and high quality services, surely continuous delivery is the same thing, is not it? In other words, guarantee a constant flow of new services? You can see it as a manufacturing production line: DevOps is the machine that builds the service, while continuous delivery is the conveyor that extracts the services from the production line, a great cycle of development of unified services.
That is not the case. Although the distinction between DevOps and continuous delivery may be a bit gray and cause confusion, there is actually clear water between the two. Continuous delivery has become an essential ingredient for teams that deliver incremental and iterative software deliveries. It is an approach whereby teams make sure that all changes in the system can be released and that any version can be started at the push of a button. Think of it this way: continued delivery aims to make the versions boring and reliable, so organizations can deliver frequently, with less risk, and receive feedback from end users until the implementation becomes an integral part of the commercial process and the competitiveness of the company.
Gartner summarized the distinction between DevOps and continuous delivery with a report that said: "DevOps is not a market, but a tool-centric philosophy that supports a continuous delivery value chain." The analyst argues that bimodal and digital commercial strategies stimulate the demand for greater speed and effectiveness in the delivery of software.
Continuous delivery and DevOps share common traits. Both methodologies point to an agile and thin thought: each one offers small and fast changes; each one depends on close commercial and IT collaboration; and each one shares the common goal of accelerating the time to market new services.
However, the goal of DevOps is to merge the roles of developer and operator, and the processes they administer, to achieve business objectives. It is a shared common culture and an improved collaboration. About clearly defined business processes.
Deliver software with fewer errors and less risk.
Launches new features to market more frequently.
Respond to the fastest marketing conditions.