DevOps
DevOps is a set of software development practices that combine software development (Dev) and information-technology operations (Ops) to shorten the systems-development life cycle while delivering features, fixes, and updates frequently in close alignment with business objectives.
Includes the cultural and professional movement that stresses communication, collaboration, integration and automation in order to improve the flow of work between software developers and IT operations professionals.
DevOps definition
DevOps is the union of people, process, and products to enable continuous delivery of value to our end users— Donovan Brown
DevOps is the combination of cultural philosophies, practices, and tools that increases an organization’s ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. This speed enables organizations to better serve their customers and compete more effectively in the market. — Amazon Web Services (AWS)
DevOps represents a change in IT culture, focusing on rapid IT service delivery through the adoption of agile, lean practices in the context of a system-oriented approach. DevOps emphasizes people (and culture), and seeks to improve collaboration between operations and development teams. DevOps implementations utilize technology— especially automation tools that can leverage an increasingly programmable and dynamic infrastructure from a life cycle perspective. — Gartner
New Relic - What is DevOps?
Measure what matters and do DevOps right with New Relic …90 Days Of DevOps
This repository is used to document my (Michael Cade's) journey on getting a better foundational knowledge of DevOps. I will be starting this journey on the 1st January 2022 but the idea is that we take 90 days which just so happens to be January 1st to March 31st.The reason for documenting these days is so that others can take something from it and also hopefully enhance the resources.
The goal is to take 90 days, 1 hour a day, to tackle over 13 areas of DevOps to a foundational knowledge.
This will not cover all things DevOps but it will cover the areas that I feel will benefit my learning and understanding overall.
GitHub Collections
These tools help you manage servers and deploy happier and more often with more confidence.
- Snippet from Wikipedia: DevOps
DevOps is a methodology in the software development and IT industry. Used as a set of practices and tools, DevOps integrates and automates the work of software development (Dev) and IT operations (Ops) as a means for improving and shortening the systems development life cycle. DevOps is complementary to agile software development; several DevOps aspects came from the agile way of working.
Source: YouTube
Agile to DevOps
- See also Agile
ALM vs DevOps?
DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the development lifecycle while improving software quality and reliability. It emphasizes collaboration, communication, automation, and measurement of the entire application lifecycle, from development and testing to deployment and operation.DevOps is closely related to ALM (Application Lifecycle Management) because it focuses on streamlining the application lifecycle by bridging the gap between development and operations teams. DevOps provides a framework for automating the deployment and operation of software applications, while ALM provides a framework for managing the entire lifecycle of the application, including development, testing, deployment, and maintenance.
In other words, DevOps is a methodology that emphasizes collaboration and automation across the entire application lifecycle, and ALM provides a framework for managing the application lifecycle from inception to retirement. Both DevOps and ALM are focused on optimizing the application lifecycle, and together they provide a comprehensive approach to software development and deployment.
Tools & Stages
Various Tools depending of the DevOps steps:
| DevOps Common | DevOps Stages | Azure DevOps |
|---|---|---|
| Plan | DevOps Plan | Azure Boards |
| Code | DevOps Create | Azure Repos |
| Build | ||
| Test | DevOps Verify | Azure Test Plans |
| DevOps Packaging | Azure Artifacts | |
| Release | DevOps Release | Azure Pipelines (also builds) |
| Deploy | DevOps Configure | Azure |
| Operate | DevOps Monitor | Azure Monitor |
– Figure out this Matrix.
- Coding – code development and review, source code management tools, code merging
- Building – continuous integration tools, build status
- Testing – continuous testing tools that provide quick and timely feedback on business risks
- Packaging – artifact repository, application pre-deployment staging
- Releasing – change management, release approvals, release automation
- Configuring – infrastructure configuration and management, infrastructure as code tools
- Monitoring – applications performance monitoring, end-user experience
Toolschain
DevOps Adoption
The 2015 State of DevOps Report discovered that the top seven measures with the strongest correlation to organizational culture are:
- Organizational investment in DevOps
- Team leaders' experience and effectiveness
- Continuous delivery.
- The ability of different disciplines (development, operations, and infosec) to achieve win-win outcomes
- Organizational performance
- Deployment pain
- Lean management practices.
Adoption of DevOps success factors include:
- Use of agile and other development processes and methods
- Demand for an increased rate of production releases – from application and business unit stakeholders
- Wide availability of virtualized and cloud infrastructure – from internal and external providers
- Increased usage of data center automation and configuration management tools;
- Increased focus on test automation and continuous integration methods
- A critical mass of publicly available best practices.
SAFe DevOps
- CALMR - Culture, Automation, Lean flow, Measurement, Recovery
DevOps + 1
Related articles:
External links:
- https://circleci.com/blog/devops-did-not-exist/ - History of DevOps