Network terminology: essential acronyms

Written by Professional Link | Jul 28, 2026 7:20:33 AM

As the demand for fast and secure connectivity increases, it is essential to understand the terms and acronyms used to describe the key components of digital transformation. The following article will provide you with a list of the most commonly used abbreviations in the networking field. We do not intend this listing to be exhaustive, but rather to provide a general overview of the language used in the telecommunications and information technology sectors at the present time.

SASE - Secure Access Service Edge

SASE (Secure Access Service Edge) is a cloud-native platform combining networking and cybersecurity capabilities. Companies using this technology can provide secure access to corporate resources regardless of the location of their users.

The SASE solution integrates Next Generation Firewall (NGWF), Secure Web Gateway (SWG), Zero Trust Network Access (ZTNA), CASB, and other security features in an approach that simplifies corporate network management and improves protection against external threats.

WAN - Wide Area Network

A WAN (Wide Area Network) is a type of network designed to cover large geographical areas, connecting multiple local area networks (LANs) located over long distances. A network of this type is essential for companies that operate in multiple locations, providing them with an efficient means of communication and allowing them to share resources among their many branches throughout the world.

WANs use technologies such as MPLS (Multiprotocol Label Switching), the Internet, and dedicated lines to ensure continuous and secure access to business data and applications, regardless of the user's geographical location. These technologies maintain business operations without interruption and ensure that information can be transmitted securely over long distances.

SD-WAN - Software-Defined Wide Area Network

SD-WAN (Software-Defined Wide Area Network) is a technology that uses software to manage and optimize WANs. It allows companies to use multiple Internet connections, such as MPLS, broadband, and LTE, to improve network performance and resilience.

This technology allows you to configure traffic policies and prioritize critical applications. However, unless implemented as part of SASE, SD-WAN cannot support global connectivity, network optimization, WAN and Internet security, cloud acceleration, and remote users.

MPLS - Multiprotocol Label Switching

MPLS (Multi-protocol Label Switching) is a networking technology used to efficiently direct data traffic in telecommunication networks. MPLS creates short, labeled paths between network nodes, enabling fast and reliable routing.

Even though MPLS is widely used for enterprise networks, the growing adoption of SD-WAN is prompting many companies to consider more flexible and cost-effective alternatives. The MPLS network is, however, a robust solution for applications requiring high levels of reliability and QoS (Quality of Service).

PoP - Point of Presence

A PoP (Point of Presence) is a physical network access point, typically located in data centers or other telecommunications facilities. PoPs are used to connect local networks to larger networks, such as the Internet or other WANs.

Multiple strategically distributed points of presence can improve network performance by reducing latency and speeding up data and application access.

VPN - Virtual Private Network

A VPN (Virtual Private Network) is a technology that creates a secure and encrypted connection between two network points, allowing users to access network resources as if they were physically present in the same location.

VPNs are widely used to ensure secure communications over public networks and to enable secure remote working. There are several types of VPN, including SSL VPNs, IPSec VPNs, MPLS VPNs. However, companies that have traditionally relied on VPNs are realizing that this solution is not suitable for the transition to the cloud, as it lacks global scalability and performance optimization capabilities.

QoE - Quality of Experience

The abbreviation QoE (Quality of Experience) refers to the user's overall perception of the quality of a network service. Unlike QoS (Quality of Service), which measures technical parameters such as latency and bandwidth, QoE focuses on the end-user experience. For example, SASE provides a higher QoE than VPN for cloud-based applications, eliminating the need to backhaul traffic through the corporate network.

Monitoring and improving QoE is crucial for ensuring that the applications and services provided meet user expectations, thus improving loyalty.

PBR - Policy-based Routing

PBR (Policy-based Routing) is a technique that uses predefined policies to route network traffic based on specific criteria defined by a network administrator, such as application type, source, destination, or other parameters.

This technique optimizes the use of network resources, improves application performance, and ensures compliance with corporate policies. This technique can prioritize certain types of traffic or route it through more expensive paths, such as MPLS circuits. SD-WAN and SASE solutions offer PBR capabilities already built-in.

Final thoughts

With digital transformation at a rapid pace, a thorough understanding of the terms discussed here helps you make informed decisions regarding network infrastructure and security solutions. Furthermore, familiarity with these concepts helps you optimize business operations, improve efficiency, and ensure that resources are strategically allocated to support growth. Keeping up with the latest trends and technologies is no longer an option, but a necessity to face the challenges of the future.

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