CI/CD is a method to frequently deliver apps to customers by introducing automation into the stages of app development. The main concepts attributed to CI/CD are continuous integration, continuous deliveryand continuous deployment.CI/CD introduces ongoing automation and continuous monitoring throughout the lifecycle of apps, from integration and testing phases to delivery and deployment. Some popular CI/CD tools are Jenkins, GitHub Actions, Git Lab CI/CD, AWS Code PipeLine and Azure Devops.

Jenkins

Jenkins is an open-source Continuous Integration server written in Java for orchestrating a chain of actions to achieve the Continuous Integration process in an automated fashion. Jenkins supports the complete development life cycle of software from building, testing, documenting the software, deploying, and other stages of the software development life cycle.
As a Continuous Integration tool, Jenkins allows seamless, ongoing development, testing, and deployment of newly created code. Continuous Integration is a process wherein developers commit changes to source code from a shared repository, and all the changes to the source code are built continuously. This can occur multiple times daily.

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GitHub Actions

GitHub Actions is a continuous integration and continuous delivery (CI/CD) platform that allows you to automate your build, test, and deployment pipeline. GitHub Actions are designed to help you build robust and dynamic automations.You can create workflows that build and test every pull request to your repository, or deploy merged pull requests to production.
GitHub Actions goes beyond just DevOps and lets you run workflows when other events happen in your repository.

Gitlab CI/CD

If you're using GitLab to manage your software delivery, you should also look at GitLab CI/CD for your continuous integration and continuous delivery needs.GitLab CI (Continuous Integration) service is a part of GitLab that build and test the software whenever developer pushes code to application. GitLab CD (Continuous Deployment) is a software service that places the changes of every code in the production which results in every day deployment of production.

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AWS CodePipeline

AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates. CodePipeline automates the build, test, and deploy phases of your release process every time there is a code change, based on the release model you define. This enables you to rapidly and reliably deliver features and updates.
AWS CodePipeline automates your software release process, allowing you to rapidly release new features to your users.AWS CodePipeline allows you to model the different stages of your software release process.

Azure Devops

Azure DevOps provides developer services for allowing teams to plan work, collaborate on code development, and build and deploy applications. Azure DevOps supports a collaborative culture and set of processes that bring together developers, project managers, and contributors to develop software. It allows organizations to create and improve products at a faster pace than they can with traditional software development approaches.
Combine Azure DevOps with open-source DevOps tools to match your unique workflow, then seamlessly integrate them on Azure. Whether your app uses virtual machines, web apps, or Kubernetes, implement DevOps practices like CI/CD, infrastructure as code, and continuous monitoring with Azure and the DevOps toolchain of your choice.

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