VLAN (virtual local area network)
A VLAN (virtual local area network) is a way to split one physical network into several separate logical networks, configured on the switches, so groups like guests, cameras or accounting cannot see each other even though they share the same cabling. It is one of the basic tools for segmenting a company network.
Related term in this glossary: Network segmentation
virtual LAN, tagged VLAN, 802.1Q, network segmentation
Related terms
Network security
Network security is the set of controls that protect a company's communications infrastructure and the traffic that flows through it, so only authorized users and devices reach each resource. It includes firewalls, segmentation, VPN or ZTNA, network access control, Wi-Fi protection and traffic monitoring.
Microsoft Intune
Microsoft Intune is Microsoft's cloud service for managing and protecting a company's computers, phones and tablets from a single console. It lets you install apps, apply security settings, require encryption and remotely wipe a lost device, and it is included in plans such as Microsoft 365 Business Premium.
CDN (content delivery network)
A CDN (content delivery network) is a network of servers spread across different cities that stores copies of a website and serves them from the point closest to each visitor. It makes the site load faster and protects it from traffic spikes and DDoS attacks.
Serverless computing
Serverless computing is a cloud model in which the provider fully manages the servers and your company only uploads code, which runs when an event happens and is billed by use. The servers still exist, but you do not have to install, scale or maintain them, as with Azure Functions or AWS Lambda.
LAN and WAN
A LAN (local area network) connects the devices in one location, such as an office or a plant, and a WAN (wide area network) links several LANs separated by distance, for example a company's branches with each other and the cloud. The LAN is usually company-owned and fast; the WAN relies on links contracted from carriers.
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