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SDLC has evolved as software complexity increased. Early software projects were often chaotic, leading to failures. Modern SDLC methodologies address these challenges.
Key Milestones:
1. 1970s: Waterfall Model – linear sequential process
2. 1980s-1990s: Iterative & Incremental Models – repeated cycles for refinement
3. 2000s: Agile & Scrum – adaptive, fast-paced, iterative development
4. 2010s+: DevOps – continuous integration and continuous delivery
Key Takeaway:
Understanding SDLC evolution helps choose the right methodology for different projects.