Any project manager working in an environment where requirements and enabling technologies are liable to change needs to understand Agile.
There are well established methodologies which help organisations deliver fast and reliably.
Already, most projects involving significant IT or website development will use agile techniques such as Scrum and DSDM Atern to some degree.
Our agile project management courses are accredited by APMG (the same certification body as PRINCE2 and MSP). They include the relevant exam.
Our online scrum course is accredited by Scrum Study and includes the certification exam.