1. Information Technology (IT)

IT connects millions of devices and manages their data flows

IT is the hardware and software to connect thousands of devices in a network and manage their exchange of information. The purpose is to enable data storage and its usage for business and operations. Tasks range from connecting simple telephones to managing complex global networks. IT is the hardware and software to connect thousands of devices in a network and manage their exchange of information. The purpose is to enable data storage and its usage for business and operations. Tasks range from connecting simple telephones to managing complex global networks.

IT Overview

As you can see, the field of IT spans a wide range of topics, ranging from data and device management, over security and scalability concerns to development and maintenance.

Typical responsibilities:

  • Setting up phones, PCs, printers and other office hardware
  • Monitoring devices and networks for security breaches
  • Maintaining local servers
  • Configuration of business systems e.g. ERP/SAP
  • Updating devices to ensure IT security
  • Setting up local networks and Wi-Fi
  • Implementing business solutions like automation
  • And many moreā€¦

Typical vendors:

What is important in IT?

Nobody wants to build an app for years just so that the end-user removes it within 30 seconds

We will see the exact same chart later in the next chapter related to Operational Technology(OT).

High importance

CategoryDescription
Quick development cycles, e.g., agileGood user experience is more important than a perfectly designed app
ScalabilityApps need to handle millions of users at the same time (e.g., Google, Netflix)
User experienceIf something is unintuitive, people tend to not use it

Of lesser importance:

CategoryDescription
Reliability & SafetyHardware is redundant, if one fails another can take over; Consequences of hardware failures are smaller
Maintainability & standardsStandards are usually best-practices and might change over time. No hard-written norms.
CertificationsTherefore, certifications are not legally required

What next?

Take a look at the following subchapters if you want to learn more these topics (as they will become relevant in chapter 3: Industrial Internet of Things (IIoT)).

If you know them, you can skip them and go directly into the next chapter: Operational Technology (OT)


1.1 Software development

Everything required to today’s software development / programming world - from various languages to best-practices

1.2 System administration

Understand traditional IT setups including hypervisors, firewalls, networks, demilitarized zones, operating systems and basic troubleshooting.

1.3 Software architecture

Everything about the fundamental structures of complex software systems

1.4 Databases

The tools & technologies that store your data

1.5 Cloud

The term cloud refers to servers and the software running on them.

Last modified October 5, 2022: Historian article (#107) (5f30dc0)