What Is Agile Development: Why Career Changers Need to Understand

 What Is Agile Development and Where Did It Come From?

Agile development is a set of principles for building software incrementally and collaboratively, with frequent feedback loops and the flexibility to change direction based on what you learn. Understanding what is agile development properly means starting with why it was created — because its origin explains everything about how it works.

Before agile, most software was built using what is called the Waterfall model: a linear process where requirements were fully defined upfront, then design was completed, then development, then testing, then deployment. The whole cycle could take a year or more. The problem was that by the time the software shipped, the requirements had changed, users wanted something different, or the market had moved on. Teams had spent months building the wrong thing.

In 2001, seventeen software engineers gathered in Utah and published the Agile Manifesto — the primary source document outlining four core values and twelve principles for a better way to build software. It is freely available online and worth reading in full; the original text is shorter and clearer than most summaries of it. What is agile development in its most distilled form: building software in short cycles, shipping frequently, incorporating feedback continuously, and treating change as a feature rather than a problem. The Digital.ai State of Agile Report — published annually since 2007 — consistently finds that over 90% of surveyed organisations use agile practices in some form, making it the dominant approach to software delivery worldwide.

The Core Concepts You Will Encounter at Work

Understanding what is agile development in a practical sense means knowing the vocabulary. The most common agile framework is Scrum, and its building blocks are: Sprints — short work cycles, typically one to two weeks, at the end of which something working is delivered. Standups — brief daily team meetings (usually 15 minutes) where each person answers three questions: what did I do yesterday, what am I doing today, is anything blocking me? Backlog — the ordered list of all work to be done, managed by the Product Owner. Sprint Planning — the meeting at the start of each sprint where the team decides what to work on. Retrospective — the meeting at the end of each sprint where the team reflects on what went well and what to improve.

What is agile development in practice is this cadence, repeated. Build a little. Ship it. Get feedback. Improve. Repeat. The cadence is the mechanism; the goal is always to have working software in users’ hands as often as possible.

Agile vs Scrum vs Kanban: The Relationship

A common source of confusion in understanding what is agile development is the relationship between agile, Scrum, and Kanban. Agile is the philosophy — the set of values and principles. Scrum is a specific framework for implementing agile, with defined roles (Scrum Master, Product Owner, Development Team), ceremonies (sprint planning, standups, retrospectives), and artefacts (backlog, sprint board). Kanban is an alternative framework that uses a continuous flow model rather than fixed sprints — work items move through stages on a board (To Do, In Progress, Done) without the sprint cycle. Both Scrum and Kanban are implementations of agile principles. Teams choose based on their size, work type, and culture.

Why Career Changers Need to Understand Agile Before Day One

For someone transitioning into software engineering from a different profession, understanding what is agile development is not an abstract nice-to-have — it is practical preparation. Your first engineering role will almost certainly be on an agile team. You will be expected to participate in standups without needing them explained. You will be expected to know what a sprint goal is and why it matters. You will be expected to use tools like Jira, Linear, or Trello that are built around agile workflows.

Career changers who arrive with this context hit the ground running. Those who encounter it for the first time on their first day face an unnecessary learning curve on top of an already demanding transition.

What Good Agile Actually Looks Like

It is worth distinguishing what is agile development in principle from what it sometimes looks like in practice. Poorly implemented agile is often just Waterfall with daily meetings — the same rigid plan, just with more ceremonies added on top. Good agile is recognisable by genuine responsiveness: teams that actually change direction when they learn something, retrospectives that produce real changes, standups that surface real blockers rather than status reports. As a junior engineer entering a team, you will quickly develop a sense for the difference.

At Codeworks, the curriculum is structured around agile principles from the start. Team projects run on sprint cycles. Students work in collaborative sprints, present working software at the end of each, and conduct retrospectives. By the time you are in your first engineering role, the answer to what is agile development is already part of how you think and work. Explore our Software Engineering Immersive or book an Intro Chat to find out more.