“In 2015, the worldwide application performance management software market grew an estimated 12.1% over that in 2014, in large part because of increased demand for a new generation of solutions designed to support DevOps and multicloud infrastructure initiatives,” explains Mary Johnston Turner, research vice president, Enterprise System Management Software. “This new generation of APM solutions is easier to implement, supports more sophisticated analytics, and is less expensive than earlier offerings. As a result, APM is providing value to a much wider range of developers and IT operations teams that need constant, current visibility into end-to-end application performance and end-user experience.”
The previous y/y was 12.7%, so things are going well in that market I’d say. As I recall, this includes mainframe and other “not normal” revenue. If you look at just the subset market of x86 and web apps, it’s even higher around 17%. That “distributed” APM TAM was estimated at $2.2bn in 2014.
I don’t have access to the full APM report, but the size is around several billion. One Gartner estimate put it around $2.6bn in 2014.
See also this vendor share commentary based on Gartner’s analysis of the APM market.