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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. [1] DevOps is complementary to agile software development ...
Development, testing, acceptance and production (DTAP) [1][2] is a phased approach to software testing and deployment. The four letters in DTAP denote the following common steps: Development: The program or component is developed on a development system. This development environment might have no testing capabilities.
Deployment environment. In software deployment, an environment or tier is a computer system or set of systems in which a computer program or software component is deployed and executed. In simple cases, such as developing and immediately executing a program on the same machine, there may be a single environment, but in industrial use, the ...
One of the differences between agile software development methods and waterfall is the approach to quality and testing. In the waterfall model, work moves through software development life cycle (SDLC) phases—with one phase being completed before another can start—hence the testing phase is separate and follows a build phase. In agile ...
Site reliability engineering (SRE) is a set of principles and practices that applies aspects of software engineering to IT infrastructure and operations. [1] SRE aims to create highly reliable and scalable IT systems. Although they are closely related, SRE is slightly different from DevOps. [2][3][4]
The Linux Professional Institute Certification (LPIC) Program is the core certification program offered by the Linux Professional Institute (LPI). LPI offers three different certification tracks: an introductory Essentials Track, the Linux Professional Track, and an Open Technology Track for professionals working with additional technologies such as DevOps and BSD.
Software development. Capability Maturity Model Integration (CMMI) is a process level improvement training and appraisal program. Administered by the CMMI Institute, a subsidiary of ISACA, it was developed at Carnegie Mellon University (CMU). It is required by many U.S. Government contracts, especially in software development.
(There is also the Professional Software Developer (PSD) certification, which covers only 4 knowledge areas: software requirements, software design, software construction, and software testing. [12] The similarity of the name of this certification to the CSDP is confusing, it is a reputable credential but NOT an equivalent of CSDP.)