VADAPALLI - DEVOPS : continuous delivery, integration, and deployment with devops.

This book is for engineers, architects, and developers, who wish to learn the core strategies of DevOps. Some of the prerequisites that is required before you begin this book are:

In the traditional approach to application development and maintenance, multiple stakeholders, departments, groups, and vendors are involved in the overall software development life cycle ( SDLC ). Most of us are familiar with the stages of application life cycle management: the business requirements are gathered by a business analyst, then developed by the development team (or could have been outsourced), and tested by QA teams (also could have been outsourced) for functionality and fitness for purpose. Performance and stress testing were also performed in applicable scenarios, by appropriate groups with relevant tools. Then the production deployment process, with a checklist and approvals, was managed by the IT teams at the organization, followed by monitoring and support by maintenance teams. And we notice that each stage of the maturity cycle, from functionality development to usability and maintenance, is managed in silos, by independent teams, departments, processes, and tools. This approach is often fragmented by techniques, frameworks, processes, people, and tools impacting the final product in terms of features, cost, schedule, quality, performance, and other administrative overheads such as interfacing and integration between vendors. Also, in this method the maintenance, support costs, and skill needs are often overlooked. However, both from application life cycle and business points of view, maintenance and support activities are key and important to assess, evaluate, and estimate well in advance.

In this lesson, we will cover the following topics:

Many technological innovations have taken place to challenge the traditional method of IT management in almost every segment. The technological advances and changes are quite profound, rapid, and often intermingled, encompassing multiple fields such as agile methodology, DevOps, big data, cloud, and so on. A comprehensive and holistic approach will undoubtedly be rewarding and derive maximum value for organizations. Many institutions have already embarked on this journey towards the future, adopting these technologies.