What is DevOps?
What is DevOps?
Understanding the Teams
First of all, every company that produces software has Development and Operations teams. These teams have different job descriptions. To summarize, the Development team focuses on producing applications and aims to enable users to use these applications as quickly as possible. On the other hand, the focus of the Operations team is to ensure that users use a fast and error-free stable system. Both teams aim to satisfy the customer, just like all businesses. But their approach to this goal is quite different in the two teams. While the development team is more open to updates and changes, the Operations team favors a stable and stable system. In reality, customers expect continuous updates as well as a stable system. But how can we deliver both wanted requirements?
In classical software development methods, these two teams work independently from each other. It causes problems since two teams with such different goals work separately from each other. As an alternative solution to these problems, DevOps, which we can say is a unity of thoughts or even a philosophy, has been formed. DevOps aims to combine these two teams. It’s called DevOps after combining the words Development and Operations.
History of DevOps
DevOps has a simple but effective history. The concept of DevOps first emerged from a discussion between Andrew Clay and Patrick Debois in 2008. They were concerned about the disadvantages of the Agile Method. So that they wanted to develop a better method instead. As for the exact release date, we can say 2009, after the “DevOps Days” events held in Belgium. The DevOps philosophy has gained many followers after this event. The basis of DevOps is the Agile Method. DevOps has made significant progress by filling the missing points of Agile, especially by reducing the workload on developers.
We can say that one of the starting points is small companies too. These companies need to develop faster and more effective products in order to find their place in a competitive market. These companies, which have more limited opportunities in terms of opportunities and personnel compared to large companies, have taken themselves one step ahead of the competition with the DevOps approach.
DevOps is a step towards cultural change as well as a productivity initiative. It is a revolution against classical methods. In order to be successful, it is necessary to completely change the company culture and perspective. In the DevOps approach, it is necessary to create a common working environment for all teams involved in the same project, instead of doing the tasks assigned to them separately. In addition, it is necessary to move away from the classical company structure. It is necessary to minimize the loss of time caused by staff working in separate departments but dependent on each other.
In DevOps content, an iterative relationship between Development and Operations is defined. This cycle is repeated by the Development team and Operations team in this process from the beginning of the project to the delivery to the customer. This cycle of repetition is called the DevOps Lifecycle. The DevOps life cycle consists of 7 steps. It is necessary to review these steps in order to fully understand DevOps.
This step includes the coding and planning of the software to be developed. During the planning phase, the vision of the project is decided and the software developers start programming. At this stage, DevOps tools are not needed for planning. However, different tools are used to maintain the code.
A coding language is chosen based on the project’s requirements. The selected language can be any coding language. The important thing at this stage is to maintain the code using Version Control tools. Examples of the most popular Version Control tools are Git, CVS, JIRA, SVN, Mercurial, and Monotone.
2. Continuous Integration
This phase is the most important step in the DevOps lifecycle. The continuous integration process starts right after the development process. It includes planning the tests to be done in the next stage. However, at this stage, it is also very important to understand the code and conform to what is required in the project draft. Continuous Integration is a problem-free step in DevOps, it can be passed to the next step without any problem.
In the continuous test phase, the test of the product produced until this stage is started. Automation tests for the actual use of the application are very important in DevOps. Examples of the most popular automation test tools are Selenium, perfecto.io. Serenity and Cypress.
At this phase, the performance of the application is constantly monitored. It is also a very important step for DevOps. As a result of the impressions made in this step, very important information about the use of the application is obtained. This stage plays a very important role in gaining the functionality of the application. It is also a stage where solutions are developed for problems encountered in practice. The quality of the application is increased with the improvements made as a result of the information obtained.
Continuous feedback phase helps the product gain new versions quickly. At this stage, it is aimed to improve the product by getting as much feedback from the customer or target audience as possible. It is a very important step for DevOps as the application performance is constantly increased.
This phase is the phase where the code is distributed to the servers. At this stage, it is important to make sure that the right code is distributed to the right servers. Containerization tools play a critical role at this stage. Vagrant and Docker are examples of the most popular Containerization tools. Containerization tools are used to maintain consistency in environments where the application is tested, developed and deployed.
All DevOps operations are based on continuity with full automation of the publishing process. It is critical for organizations to shorten the production time of the products they constantly put on the market.
In summary, it is very easy to identify the factors that prevent development thanks to the continuity principles it includes with the DevOps approach. It is of course very important to realize and solve such factors in the early stages of the project in terms of saving time and resources. This is where the biggest problem of classical methods lies. Developing the application for months without knowing that there is a problem and seeing the simple mistake made in the first place when it comes to end can lead to huge expenses. With DevOps, changing the culture of your company and giving employees different perspectives, increases the production of products faster and increases customer satisfaction, as well as increasing the satisfaction of the employees due to an efficient working environment and prevented crises. It is an undeniable fact that DevOps will become even more popular in the coming years.