What is software engineeringSoftware engineering is the application of principles used in the field of engineering, which usually deals with physical systems, to the design, development, testing, deployment and management of software systems.Description: project-lifecycle.webpThe field of software engineering applies the disciplined, structured approach to programming that is used in engineering to software development with the stated goal of improving the quality, time and budget efficiency, along with the assurance of structured testing and engineer certification.Software engineering is typically used for large and intricate software systems rather than single applications or programs. Development, however, is simply one phase of the process.