History
The methodology was drafted by developers at Heroku, a platform-as-a-service company, and was first presented by Adam Wiggins circa 2011.The Twelve Factors
Criticism and adaptation
An Nginx architect argued that the relevance of the Twelve-Factor app concept is somewhat specific to Heroku, while introducing their own (Nginx's) proposed architecture for microservices. The twelve factors are however cited as a baseline from which to adapt or extend.References
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