Agile SDLC

Agile SDLC is the software development life cycle recast around the values of the Agile Manifesto: instead of moving a project through one long, front-loaded sequence of requirements, design, build, and test, it runs the same phases in short, repeating iterations that each end in working software. Every cycle plans a small slice, builds it, tests it, and ships it, then feeds what was learned back into the next cycle. It trades the certainty of a big up-front plan for the ability to change direction as you learn.

• Iterations over phases - Work is delivered in short sprints, each producing a usable increment rather than a document handed to the next stage.
• Working software as the measure - Progress is judged by running code that delivers value, not by how much of a plan has been completed.
• Continuous feedback - Stakeholders see and react to real output every cycle, so requirements evolve instead of being frozen at the start.
• Cross-functional collaboration - Design, build, test, and operations happen together inside the team rather than across siloed hand-offs.

In API work, the Agile SDLC is what makes an API-as-a-product mindset practical: you design a small piece of the contract, ship it, gather consumer feedback, and iterate on the interface across versions rather than trying to specify the whole surface up front. Design-first tooling — an OpenAPI contract, mocks, and generated documentation — fits naturally into each sprint, giving teams something concrete to review every cycle. It is the operating rhythm behind the broader Agile practices I see across the providers I score, and increasingly the loop that governance and agent-readiness work has to plug into.