Software development methodologies are ways to classify processes or provide blueprints for how engineers move a system through its development life cycle. The lessons answer how development can be organized from life cycle phases into iterative work. They build an understanding of how different approaches shape the progression of software development.
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In software development methodologies, the Capability Maturity Model Integration (CMMI) is one of the leading models and is based on best practices. Independent assessments grade organizations on how well they follow their defined processes, not on the quality of those processes or the software produced. The SDLC approach to software development methodologies is "to pursue the development of information systems in a very deliberate, structured and methodical way, requiring each stage of the life cycle, from the inception of the idea to delivery of the final system, to be carried out rigidly and sequentially" within the context of the framework being applied.
Software development methodologies are operational frameworks that sequence, batch, and govern work across the software development life cycle, defining how requirements are scoped, how often code ships to production, and how quickly user feedback alters the roadmap. In 2026, engineering organizations select from eight operating models, including Scrum, Kanban, the regulated V-Model, and AI-native spec-driven development.
Jeff Sutherland's Scrum describes how teams break work into goals for completion within time-boxed iterations called sprints.
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