DevOps is a combination of practices, methodologies, and tools that aims to bridge the gap between software development and IT operations. The term “DevOps” is derived from the words “development” and “operations.”

The primary goal is to create a culture of collaboration and shared responsibility, where developers and operations teams work together throughout the entire software development lifecycle. This includes planning, coding, building, testing, releasing, deploying, and monitoring software applications.

The DevOps life cycle (7 Cs)

  • Continuous Planning
  • Continuous Development
  • Continuous Testing
  • Continuous Integration:
  • Continuous Deployment
  • Continuous Monitoring
  • Continuous Feedback

Popular DevOps Tools

Version Control SystemsGit, SVN, Mercurial
Continuous Integration/Continuous Delivery (CI/CD):Jenkins, CircleCI, Travis CI, GitLab CI/CD
Configuration ManagementAnsible, Chef, Puppet, SaltStack
ContainerizationTerraform, CloudFormation
Infrastructure as Code (IaC):Terraform, CloudFormation
Automated TestingSelenium, JUnit, TestNG, Mocha, Jest
Monitoring and Logging:Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana)
Collaboration and CommunicationSlack, Microsoft Teams, Jira, Trello
Cloud Platforms:Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP)

Key Principles and Practices of DevOps

  1. Continuous Integration (CI): Developers frequently integrate their code changes into a shared repository, allowing automated builds and tests to be executed. CI helps identify and resolve integration issues early in the development process.
  2. Continuous Delivery (CD): The ability to deliver software changes to production environments rapidly, reliably, and frequently. CD automates the release process, enabling faster time-to-market and reducing the risk of deployment errors.
  3. Infrastructure as Code (IaC): Managing infrastructure resources (such as servers, networks, and storage) through machine-readable configuration files, enabling automation, reproducibility, and version control.
  4. Automated Testing: Automated tests are performed throughout the development process to identify defects and ensure the software meets quality standards. This includes unit tests, integration tests, and end-to-end tests.
  5. Continuous Deployment: Automating the deployment of applications to production environments after passing all necessary tests and checks. This ensures a smooth and repeatable deployment process.
  6. Monitoring and Logging: Collecting and analyzing real-time data about the application’s performance, user behavior, and system health. Monitoring and logging help identify issues, measure performance, and improve the overall user experience.

DevOps is a culture, practice, and set of tools that aims to unify the development (Dev) and operations (Ops) of software applications. It enables teams to collaborate better, deliver faster, and improve quality and reliability of their products

Some of the key aspects are:

  • Agile planning and tracking
  • Continuous integration and delivery
  • Cloud-based hosting and deployment
  • Automated testing and monitoring
  • Version control and code reviews
  • Package management and artifact sharing

DevOps is not the same as Agile, but they are complementary. Agile is a software development framework that focuses on delivering value to customers in small increments. DevOps extends Agile principles to the entire application lifecycle, from planning to operation

Further Readings

https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-devops/

https://azure.microsoft.com/en-us/products/devops/

https://learn.microsoft.com/en-us/devops/what-is-devops

11 DevOps Tools for 2023 | Coursera

DevOps Lifecycle: 7 Phases Explained in Detail with Examples (simform.com)

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