Knowledge Hub

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

What is Information Security Management (ISM)?
What is SASE Secure Access Service Edge A1 Digital

What is SASE?

Learn about SASE (Secure Access Service Edge) and how it combines network security and wide-area networking in a single, cloud-based solution. This article explores how SASE simplifies network management while providing secure, scalable access for modern businesses.

22.05.2026

What is SD WAN Software Defined WAN A1 Digital

Software-Defined Wide Area Network (SD-WAN)

Discover SD-WAN technology and how it’s transforming network management for businesses. This article explains how SD-WAN improves security, agility, and efficiency, offering a flexible solution for modern, distributed network architectures.

22.05.2026

Supply chain monitoring: Mastering complexity in supply chains

Supply chain monitoring: Mastering complexity in supply chains

Explore how modern supply chain monitoring leverages IoT, digital platforms and AI to increase visibility, reduce risk and manage complexity across global supply networks for greater efficiency and resilience.

07.05.2026

Digitalization of logistics: The basis for stable and efficient supply chains

Digitalization of logistics: The basis for stable and efficient supply chains

Explore how digitalization is transforming logistics — from smart technologies and automated processes to real-time data insights that drive efficiency, transparency, and future-ready supply chains.

07.05.2026

Further Articles

What is a Nano SIM? All about the smallest SIM card format

What is a Nano SIM? All about the smallest SIM card format

Discover the role and technology behind the Nano SIM — the smallest physical SIM format used in modern devices — and what the future holds with eSIM and iSIM.

07.05.2026

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.

07.05.2026

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.

07.05.2026

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.

07.05.2026

34 A1 Digital SIM card sizes Header v4

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.

07.05.2026