Enterprise Architecture is always seen as a problem to workaround by Agile teams. On of the reasons is that usually an EA design takes longer than an Agile iteration producing a release and when finished is often already obsolete (because of new technologies, because of new requirements, because of new feedbacks).
Continous Architecture is an attempt to mediate Agile's need to be fast and to embrace change with the benefit of a long term strategy and planned control switching from designing the software to designing the product.