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IT Explained

We at Paessler use IT-related terms constantly, and we are very much aware of the “The Imposter Syndrome”
in IT when professionals continue using terminology they might not even understand themselves. But there are also plenty of new terms in the fields of OT and IoT that many people may not be familiar with, or for which there are even contrary definitions.

At Paessler, we write a lot about IT, OT, and IoT topics. That's why you can find a comprehensive overview of relevant terminology here, which we are constantly updating.

You feel there’s something missing? Get in touch with us!

Question about terminology? Find your answer here!

Active Directory

Active Directory (AD) is a directory service created by Microsoft for use in a Windows Server environment.

Bandwidth

Bandwidth is the amount of data that can be transferred from one point to another within a network in a specific amount of time. It is measured in bits per second.

CCTV

CCTV stands for closed-circuit television and is commonly known as video surveillance.CCTV networks are commonly used to detect and deter criminal activities, and record traffic infractions, but they have other uses.

DICOM

Digital Imaging and Communications in Medicine (DICOM) is an international, nonproprietary standard that specifies the protocols used to facilitate the exchange of medical images.

HCI

HCI stands for hyperconverged infrastructure. HCI is made up of virtual networking, administration, and storage and computing components that share resources.

HL7

The goal of HL7 is to enhance interoperability between healthcare information systems (HISs) that have implemented it.

IIoT

IIoT stands for the Industrial Internet of Things and refers to a network of connected devices in the industrial sector. It is a subset of the Internet of Things (IoT) .

What is a smart building? Definition and Details ()

IoT - Smart Buildings

Smart buildings deliver actionable information about a building itself or a specific room inside it so that owners or tenants can better manage it.

What is a smart city? Definition and Details ()

IoT - Smart Cities

A smart city uses information and communication technologies (ICT) to help resolve the traditional challenges of urban living.

IP address

An IP address (internet protocol address) is a numerical representation that uniquely identifies a specific interface on the network.

LPWA

LPWA stands for Low-Power Wide-Area and serves as a generic term for any network designed to communicate wirelessly with lower power than other networks such as cellular, satellite, or WiFi.

MQTT

MQTT stands for Message Queuing Telemetry Transport. It is a lightweight messaging protocol for use in cases where clients need a small code footprint and are connected to unreliable networks or networks with limited bandwidth resources.

NetFlow

NetFlow is a network monitoring protocol that allows a NetFlow enabled device to collect, aggregate, and export all passing traffic data...

OPC UA

OPC UA stands for OPC Unified Architecture. It is an extensible, platform-independent standard that enables the secure exchange of information in industrial systems.

Packet Sniffing

Packet sniffing is the practice of gathering, collecting, and logging some or all packets that pass through a computer network.

Ping

Ping is a command-line utility to test the reachability of a networked device. It sends a echo request and expects an echo reply from the target host.

REST

REST is an architecture style definition applied to networked applications. It exists as a series of constraints applied to the implementation of network components, enabling uniform interface semantics, rather than application-specific implementations and syntax.