Continuous integration (CI), continuous delivery/deployment (CD), and continuous testing (CT) accelerate the code release process and help with deployment.
IT organizations are increasingly turning to DevOps practices to improve value delivery for the customer. When DevOps implements CI, CD, and CT methods correctly, releases become more reliable and error-free. This, in turn, leads to higher productivity, efficiency, and customer satisfaction.
What Is CI in DevOps?
CI allows developers to write, update, or fix a feature, then commit a code to the central code repository reliably, multiple times a day. Each update triggers an automated build and testing sequence for a given project, ensuring that code changes that merge into the repository are reliable.
It’s a critically important step to increasing deployment efficiency. CI continuously integrates code changes into the existing codebase to quickly identify and remediate any conflicts between different developers’ code changes.
If a development team is not making frequent commits to a common branch in a shared source code repository, they are not successfully doing continuous integration. Additionally, if the test and build processes are automated but developers work on isolated branches that are not often integrated into
a shared branch, that is also not continuous integration.
What Is CD in DevOps?
CD is the implementation of automating the entire software release process. Once code has passed all the tests, deployment becomes the last step in the process. In a DevOps pipeline, CD often is referred to as continuous delivery but can also mean continuous deployment.
Continuous Delivery vs. Continuous Deployment
CD is the implementation of automating the entire software release process. Once code has passed all the tests, deployment becomes the last step in the process. In a DevOps pipeline, CD often is referred to as continuous delivery but can also mean continuous deployment.
Continuous Delivery vs. Continuous Deployment
Continuous delivery follows these steps:
These two are not mutually exclusive, but they include each other. Their overall goal is the same – make software development and release processes faster and more robust. The key difference between them is the scope of automation applied.
With continuous delivery, the process allows developers to be more productive by deploying a new release at any time with a few clicks. On the other hand, continuous deployment is a step up from continuous delivery as every change in the source code is deployed to production automatically. This deployment does not require approval from a developer.
What Is CT in DevOps?
While CI and CD are crucial in accelerated product releases, CT brings the quality factor into these frequent releases. In the CI/ CD pipeline or DevOps pipeline, sometimes CT is omitted even though it is a critical component in any pipeline. The real benefits of adopting CI/ CD are not truly felt if there is a lack of automated testing.
CT is a primary enabler of continuous feedback. Not only is it considered the first step in the right direction when embarking on a DevOps journey, but it drives software delivery through the software development cycle (SDLC) by being a continuous feedback mechanism. It allows DevOps teams to enable deployment and post-deployment testing in local environments.
Source: (bunnyshell.com)
- Puts a change in the staging environment and release schedule.
- A person manually approves this code,
- Finally, it is deployed.
These two are not mutually exclusive, but they include each other. Their overall goal is the same – make software development and release processes faster and more robust. The key difference between them is the scope of automation applied.
With continuous delivery, the process allows developers to be more productive by deploying a new release at any time with a few clicks. On the other hand, continuous deployment is a step up from continuous delivery as every change in the source code is deployed to production automatically. This deployment does not require approval from a developer.
What Is CT in DevOps?
While CI and CD are crucial in accelerated product releases, CT brings the quality factor into these frequent releases. In the CI/ CD pipeline or DevOps pipeline, sometimes CT is omitted even though it is a critical component in any pipeline. The real benefits of adopting CI/ CD are not truly felt if there is a lack of automated testing.
CT is a primary enabler of continuous feedback. Not only is it considered the first step in the right direction when embarking on a DevOps journey, but it drives software delivery through the software development cycle (SDLC) by being a continuous feedback mechanism. It allows DevOps teams to enable deployment and post-deployment testing in local environments.
Source: (bunnyshell.com)
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