All modern Developers are doing agile, whether they believe it or not. The agile movement of the 90's was in response to waterfall constraints imposed by the t

All modern Developers are doing agile, whether they believe it or not. The agile movement of the 90's was in response to waterfall constraints imposed by the tools of the 70's and 80's. The majority of projects today are no longer handcuffed by these constraints. For historical context, I would suggest reading up on the Scrum vs XP war, as one camp pursued a commercialization and certification path to agile and the other remained largely principle-based. When I see people expressing frustration with agile, the cause is typically a byproduct of the commercialization camp.