MITRE ATT&CK is the defacto framework for organizations to measure their defense posture. ATT&CK provides categorical verticals in the form of tactics, which align to the common methodologies attackers use. Within these verticals are a set (and subsets) of common ways in which attackers accomplish a tactic (vertical). These are known as techniques.
Some techniques may be common across multiple operating systems. This usually equates to a broad definition of a technique. As defenders, this means we must understand how a single technique may be implemented on multiple platforms—which can be difficult for many, including myself. Luckily, organizations like Red Canary have provided our community with a rich framework to assist with the testing of these techniques.