Lessons Learned: What is customer development?
Startup Lessons Learned
NOVEMBER 8, 2008
This theory has become so influential that I have called it one of the three pillars of the lean startup - every bit as important as the changes in technology or the advent of agile development. Mark Leslie has articulated a very similar methodology to "4 steps to the epiphany" in his "sales learning curve" model which I also find compelling.
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