What Is the Agile Manifesto? Values, Principles & Its Lasting Significance
The Agile Manifesto is a brief, foundational document that defines the values and principles underpinning modern agile software development. Published in February 2001 by a group of 17 software developers who gathered at a ski resort in Snowbird, Utah, the manifesto was a direct response to the heavyweight, documentation-heavy, plan-driven methodologies that had come to dominate the industry in the 1990s.
In approximately 150 words, the Agile Manifesto articulated a philosophy of software development that has since transformed how the vast majority of software teams work — and influenced product management, design, and organizational management far beyond software.
The Four Values
The manifesto is organized around four core value pairs — stating what agile teams prioritize, while acknowledging that the items on the right still have value:
“Individuals and interactions over processes and tools”
Agile software is built by people, and the quality of those people’s collaboration determines the quality of the product. No process or tool can substitute for talented people working together effectively. This value warns against the temptation to solve human problems with process overhead.
“Working software over comprehensive documentation”
The measure of progress is working software in users’ hands — not documents, plans, or specifications. This doesn’t mean no documentation; it means documentation in service of shipping, not documentation as an end in itself.
“Customer collaboration over contract negotiation”
Software development produces better outcomes when customers are active partners throughout the process rather than parties to a specification contract whose changes require formal renegotiation. Ongoing collaboration accommodates the reality that requirements are never fully known at the start.
“Responding to change over following a plan”
Markets change. Requirements evolve. Technical discoveries alter what’s possible. Teams that maintain the flexibility to respond to what they learn produce better outcomes than those locked into plans made before most of the relevant information was available.
The Twelve Principles
The manifesto is accompanied by twelve principles that give more specific guidance on how to embody the values:
- Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.
- Welcome changing requirements, even late in development.
- Deliver working software frequently, from a couple of weeks to a couple of months.
- Business people and developers must work together daily throughout the project.
- Build projects around motivated individuals. Give them the environment and support they need, and trust them to get the job done.
- The most efficient and effective method of conveying information to and within a development team is face-to-face conversation.
- Working software is the primary measure of progress.
- Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely.
- Continuous attention to technical excellence and good design enhances agility.
- Simplicity — the art of maximizing the amount of work not done — is essential.
- The best architectures, requirements, and designs emerge from self-organizing teams.
- At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly.
What Made the Manifesto Significant
The Agile Manifesto’s power came from several sources:
It named a practice that was already emerging: The 17 signatories were practitioners who had each developed variations on lightweight, iterative methods. The manifesto didn’t invent something new — it gave shared language to what many had already discovered worked.
It was deliberately brief: The manifesto is not a methodology manual. It doesn’t prescribe ceremonies, roles, or artifacts. This brevity made it applicable across widely different contexts and avoided the rigidity that had hobbled the methodologies it was responding to.
It was values-first: By starting with values rather than practices, the manifesto invited adaptation. Teams could implement the values through different specific practices depending on their context.
The Manifesto’s Legacy and Limitations
Over two decades after its publication, the Agile Manifesto’s influence is pervasive. Scrum, Kanban, SAFe, LeSS, and virtually every other modern development framework claim alignment with it.
Its most honest critics — including some of its original signatories — note that “agile” as practiced in many organizations has drifted significantly from the manifesto’s spirit: teams that perform agile rituals (standups, sprints, retrospectives) without embodying the underlying values, or that use agile frameworks as management control mechanisms rather than team empowerment tools.
The manifesto itself has been updated modestly since 2001 but remains essentially unchanged. Its enduring relevance reflects how accurately it captured the fundamental challenges of software development — challenges that haven’t been solved by time or technology, only addressed by the practices it helped legitimate.
Key Takeaways
The Agile Manifesto is the philosophical foundation of modern software development. Its four values and twelve principles define not just how software should be built but the mindset — the relationship to uncertainty, to customers, to changing requirements, and to continuous improvement — that makes building software well possible. Understanding it is not merely historical; it explains why agile practices work when they do and why they fail when the values behind them are abandoned in favor of the rituals alone.