CQRS & Event Sourcing in the Wild

In software development, change is pretty much the only constant factor. In fact, embracing change is one of the twelve principles behind the Agile Manifesto. The need for adaptability and ability to change becomes especially apparent when developing an application, or a product, for a longer amount of time. As time passes, our understanding of the domain we are working in evolves. We develop based on new requirements, opportunities, changes in the market or legislation, or other factors.