Input Required: Primary Subgroups of IT

I had a spur of the moment idea about coming up with some data visualizations for the IT job industry. I'm trying to segment all of the different sub-groups of IT with as little overlap as possible. Please let me know if you can think of any more to add to the list.

Development
Database Management
DevOps
Help Desk/Customer Support
Management
Networking
Security and Assurance
Sales
Systems Administration
Technical Writing

I need more input.

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Comments

--chris--

App management?

Trifidw

We have thats not included in your list:

Project Managers
System Integration
System Managers (someone who sits between end users of systems and IT)

ratbuddy

Devops is just a buzzwordy way of saying developer who works with certain methods and constraints (and does some of the deployment stuff), it doesn't really belong on the list if you're trying to avoid overlap.

egrizzly

I think it would really depend on how large the company is. Generally the larger the organization the more specialized. Here's my addition

IT Auditor
Database Developer