VPN (VPN)

A Virtual Private Network creates an encrypted tunnel between your device and a remote network, making it look like you’re sitting in the office even when you’re working from a beach in Portugal. In the enterprise world, VPNs connect remote employees to internal resources, link cloud VPCs together, and secure traffic across untrusted networks. Site-to-site, client-to-site, mesh VPNs — there’s a flavor for every architecture.

The enterprise version lets you access Jira from home. The consumer version lets you access Netflix from another country. Same underlying technology, wildly different vibes. Modern tools like WireGuard and Tailscale have made VPNs faster and easier to set up, replacing the old OpenVPN configs that required a PhD in networking to debug.

Why it matters: VPNs are fundamental to secure remote access and network architecture. In the age of remote work and cloud infrastructure, they’re the invisible encrypted pipes that keep private traffic private — and they’re not going anywhere.