Since software lies at the heart of most digital initiatives, how an organization creates and maintains these assets is now among the top business priorities. Many business strategies recognize that market share will be won by those who can quickly deliver quality applications that offer richer user experiences. Newer approaches such as Agile, DevOps, cloud platforms and automation needn’t only be the pride of digitally native businesses. Traditional organizations aiming to modernize archaic IT systems, methodologies and practices must also embrace these approaches, which have emerged though the five paradigm shifts that have transformed the way software is engineered, deployed and maintained.
Agile software development challenges traditional methods as it focuses teams on delivering business value in short and sustainable intervals. Agile runs counter to a big-bang approach where projects might take six to 12 month to deliver as teams lumber through extended phases, multiple document hand-offs, discrete collaborations and inadequate customer input. Test-driven development (TDD), a more modern approach, flips the development process by advocating that teams first write test scripts before they create source code, thus reducing defects and other speed impediments.