The “agile” IT principle has become the mantra of the digital age. With the growth of projects, the transition from monolithic applications to a system of microservices, the increase and accumulation of products, questions arise that require a completely different approach. Now the greatest interest is in the DevOps methodology, located at the intersection of development and operational management. DevOps is not just a set of techniques, it is a philosophy. User-centric developers must pay attention to support and support requests. System administrators should report product problems and contribute to process improvement. But establishing connections within the company is only the first step. To make a product simple and convenient, you will have to invest time and resources into its development. Configuration through a central service, implementation by simple copying, absence of external dependencies, thoughtful metrics instead of garbage in logs - these are just some of the tasks that will have to be solved along this path. The book “DevOps Philosophy” will introduce you to the technical, cultural and managerial aspects of the devops culture and will allow you to organize your work so that you enjoy developing, maintaining and using the software.