We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value:

• Individuals and interactions over processes and tools
• Working software over comprehensive documentation
• Customer collaboration over contract negotiation
• Responding to change over following a plan

That is, while there is value in the items on the right, we value the items on the left more.

The meanings of the manifesto items on the left within the agile software development context are described below:

• Individuals and interactions – in agile development, self-organization and motivation are important, as are interactions like co-location and pair programming.
• Working software – working software will be more useful and welcome than just presenting documents to clients in meetings.
• Customer collaboration – requirements cannot be fully collected at the beginning of the software development cycle, therefore continuous customer or stakeholder involvement is very important.
• Responding to change – agile development is focused on quick responses to change and continuous development.

The Agile Manifesto is based on twelve principles:

1. Customer satisfaction by rapid delivery of useful software
2. Welcome changing requirements, even late in development
3. Working software is delivered frequently (weeks rather than months)
4. Working software is the principal measure of progress
5. Sustainable development, able to maintain a constant pace
6. Close, daily cooperation between business people and developers
7. Face-to-face conversation is the best form of communication (co-location)
8. Projects are built around motivated individuals, who should be trusted
9. Continuous attention to technical excellence and good design
10. Simplicity—the art of maximizing the amount of work not done—is essential
11. Self-organizing teams
12. Regular adaptation to changing circumstances

• Agile Manifesto official website
• Wikipedia entry
• Agile Software Methodologies
• Agile Best Practices
• Why Small Teams Work More Productively: Jeff Bezos’ 2 Pizza Rule

• ToBeAgile