The Agile Movement was launched in 2001 when seventeen software developers came together to find common language and purpose for a radical new idea.
They called this movement Agile Software Development 
and published an Agile Manifesto to proclaim the values and principles of this movement.
These developers were challenging the traditional way software was developed, a model that was described as the Waterfall Model .
The Waterfall Model was based on the sequential production model of the industrial economy. This model is called a "value chain", which means that the production process is designed with clearly defined steps. Workers are then trained to follow those steps, based on management's instructions.
The implication, is that management defines and controls the entire process, something called a "Command and Control" management model.
The challenge faced by software developers was that this Waterfall Model was not flexible enough to handle the complexity of software development where needs and tools sets were dynamic and continually evolving. As a result, there was a palpable frustration that demanded bold action.
There were multiple experiments of alternative models. Two of the most significant were Extreme Programming and Scrum .
Together, they began to shape a new Agile Mindset that radically transformed how value is created and provided an alternative to the Cartesian Mindset of the Industrial Age and empower the new Innovation Economy.
Agile's Grand Synthesis and its Radical Premise.
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