Agile History — The Agile Manifesto

Agile Development was introduced in 2001 by 17 software developers and consists of 4 main principles.

• Individuals and Interactions Over Processes and Tools. People-first mindset places more value on the team than the structures they have to work with.
• Working Software Over Comprehensive Documentation. Before agile, pages and pages of documentation were required.
• Customer Collaboration Over Contract Negotiation. The shape of the product can change throughout the lifecycle depending on new information.
• Responding to Change Over Following a Plan. Agile expects change.