I recently read something – a blog, a tweet, a LinkedIn article perhaps – describing the use of wire data to analyze application performance. I remember that the author’s use of the term “APM” in this context caused one reader to comment, complaining that “you can’t call wire data APM.” This was around the same time I referred casually to Dynatrace’s wire data offering (Data Center Real User Monitoring, or DC RUM) as both “APM for IT Operations” and “probe-based APM.” So that complaint has stuck with me, prompting me to ask – and offer an answer to – the question.