.net been many things over the years and included many things. I guess if there was a definition at it's core (no pun intended) it's a managed code runtime with

.net been many things over the years and included many things. I guess if there was a definition at it's core (no pun intended) it's a managed code runtime with an associated set of libraries and framework to develop applications. But it's also a brand name for Microsoft development tools and frameworks. But it's very much not precise in how it's used by MS itself.