Knowledge Hub

Read our latest articles about digitalization, IoT, Cloud and Cybersecurity.

uRLLC as key technology for real-time communication

uRLLC as key technology for real-time communication

Discover how uRLLC (Ultra-Reliable Low-Latency Communication) empowers safety-critical 5G applications like autonomous driving, telemedicine, and Industry 4.0 by delivering near-instant and ultra-reliable connectivity.

20.10.2026

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Efficient Site Connectivity: The Right Underlay Can Make All the Difference

Learn how the right underlay optimizes site connectivity, increases reliability, and reduces network complexity and costs.

07.10.2026

What is Firewall as a Service (FWaaS)? A complete overview for companies

What is Firewall as a Service (FWaaS)? A complete overview for companies

Learn how Firewall as a Service (FWaaS) offers scalable, cloud-based security with real-time protection and zero-maintenance updates.

07.10.2026

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2G shutdown in Europe: Timelines, technologies, and what businesses should do now

2G shutdown in Europe: Learn what the 2G network switch-off means for businesses, connected devices and IoT, and how to prepare for the transition.

05.10.2026

The integrated SIM iSIM explained A1 Digital

The integrated SIM (iSIM) explained

Explore iSIM technology and how it’s revolutionizing the way devices connect to mobile networks. This article delves into the advantages of iSIM, including its space-saving design, enhanced flexibility, and how it’s shaping the future of IoT applications.

30.09.2026

Further Articles

IMSI: The central subscriber identification explained

IMSI: The central subscriber identification explained

The IMSI number uniquely identifies mobile subscribers within a network and is essential for secure communication in mobile services and IoT applications. This article covers its function and key security aspects.

30.09.2026

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SIM card sizes explained: Mini, Micro, Nano & eSIM

Explore the evolution of SIM cards—from full-size and Mini SIMs to the modern Nano SIM and eSIM—understand their differences in format, dimensions, and functionality for today’s devices.

21.09.2026

What is TCP/IP?

What is TCP/IP?

Dive into the world of TCP/IP, the fundamental protocol that powers internet communication. This article explains how TCP/IP works, its key components, and why it remains essential for modern networking and digital communication.

21.09.2026

NIS2

NIS2: What companies need to know and implement now

The EU’s NIS2 Directive raises the bar for cybersecurity across critical sectors and their supply chains. Discover what the new rules mean for your organization and how to start preparing now.

02.09.2026

What is Information Security Management (ISM)?

What is Information Security Management (ISM)?

Learn what Information Security Management (ISM) is, why it is essential for protecting business-critical information, and how organizations can establish effective security processes. Discover the role of ISMS, ISO 27001, risk management, and clearly defined responsibilities in building a resilient security framework.

02.09.2026

APN (Access Point Name) and its importance for mobile device data connections

APN (Access Point Name) and its importance for mobile device data connections

Discover how Access Point Names (APNs) serve as crucial gateways between mobile devices and the internet, ensuring seamless data connectivity. This article delves into the structure and significance of APNs, highlighting their role in reliable mobile network communication.

13.08.2026

IoT Protocols A1 Digital

IoT Protocols: A comprehensive guide for enterprises

In this comprehensive guide, we explore the key IoT protocols that enable seamless communication between devices. Learn about the various protocols, their functions, and how they play a crucial role in ensuring efficient and secure IoT networks.

13.08.2026

LPWAN for IoT: A guide to what companies should know_A1 Digital

LPWAN: Connectivity made easy for companies

In this guide, we explore LPWAN (Low Power Wide Area Network) technology and its significance for IoT. Learn how LPWAN enables cost-effective, long-range connectivity for IoT applications, and why it’s an essential solution for businesses looking to optimize their IoT deployments.

05.08.2026

Why Data Loss Prevention (DLP) is essential for data security

Why Data Loss Prevention (DLP) is essential for data security

Data Loss Prevention (DLP) is essential for safeguarding sensitive company information from unauthorized access or leaks. Learn how DLP works to protect your business from potential data breaches and compliance risks.Data Loss Prevention (DLP) protects sensitive data from loss and unwanted outflow.

30.06.2026

What is Network as a Service NaaS explained_A1 Digital

What is Network-as-a-Service? NaaS explained

Looking for a flexible and cost-effective networking solution? Discover how Network-as-a-Service (NaaS) is transforming the way businesses manage their networks. Learn how NaaS can simplify operations, reduce costs, and scale your business efficiently in our latest blog post.

30.06.2026

Secure Web Gateway: Why an SWG is essential for safe browsing in the workplace

Secure Web Gateway: Why an SWG is essential for safe browsing in the workplace

Learn how a Secure Web Gateway (SWG) helps protect your business by blocking harmful websites, preventing malware, and ensuring secure web traffic—essential for today’s remote and cloud-driven work environments.

29.06.2026

ZTNA (Zero Trust Network Access) explained: What is the meaning of the new IT security standard

ZTNA explained: What is the meaning of the new IT security standard

In this blog post, we break down how ZTNA enhances security by ensuring that every user and device is continuously verified before accessing your network. Learn how this approach can protect your business from modern cyber threats.

28.05.2026

What is a CASB? The Cloud Access Security Broker explained

What is a CASB? The Cloud Access Security Broker explained

Discover how a Cloud Access Security Broker (CASB) secures your cloud services, providing visibility, threat protection, and compliance management.

26.05.2026

IIoT: How the Industrial Internet of Things transforms manufacturing

IIoT: How the Industrial Internet of Things transforms manufacturing

Discover how the Industrial Internet of Things (IIoT) is transforming manufacturing and production by connecting machines, sensors, and analytics to boost efficiency and reduce downtime. Dive into the core benefits and real-world applications of IIoT in modern industry.

01.08.2025

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The Importance of Working on the Edge

14.08.2025

Smart metering as a digital solution for the energy transition

Smart metering as a digital solution for the energy transition

Discover how intelligent metering systems are revolutionizing energy management—streamlining data collection, improving efficiency, and enabling real-time insights. Learn how smart meters are laying the foundation for a digital energy future.

04.08.2025

Standard SIM: The foundation of mobile communication

Standard SIM: Origin, usage & significance explained

From its origin as a credit-card-sized breakthrough in the early days of GSM to its niche survival in industrial systems, discover why the standard SIM still matters in our digital world.

01.10.2025

OPC UA: Open communication for industry

OPC UA: Open communication for industry

Explore how OPC UA (Open Platform Communications Unified Architecture) serves as a universal communication standard in Industry 4.0, enabling seamless, secure, and platform-independent data exchange across diverse industrial systems.

14.05.2025

Mini SIM: The former standard format for SIM cards

Mini SIM: The former standard format for SIM cards

Though largely phased out in modern smartphones, the mini SIM still plays a key role in routers, industrial systems, and IoT setups — learn how it compares to newer formats and where it remains indispensable.

03.10.2025

Micro SIM (3FF): Compact format with continued relevance

Micro SIM (3FF): Compact format with continued relevance

Learn everything about the Micro-SIM (15 × 12 mm): how it works, where it's used, and how it compares with other SIM formats in modern devices.

03.10.2025