Enterprise Technology Generalisations

I’ve waked around one of two organisations, across a load of verticals and well I see people post things online about common technology generalisations and frankly it sometimes leaves me wondering what networks they have been in, but also am I just on another planet? So, I thought I would jot down some notes on common tech I see in orgs during my business travels but also on in the ciberz! It’s not a list of everything I see, it’s just what appears in my head as quite bloody common.