Internet Service Providers and Backbones
Learn how ISPs and high-speed backbones carry your traffic across the world.
Who Connects You
To reach the internet you need an Internet Service Provider (ISP). It connects your home to the wider internet — your on-ramp to the whole network.
Tiers of Providers
ISPs come in tiers. Tier 1 reaches the whole internet without paying anyone; Tier 2 connects regions; Tier 3 serves local customers. Layers carry your traffic up.
All lessons in this course
- The Internet as a Network of Networks
- What Happens When You Visit a Website
- Internet Service Providers and Backbones
- Bandwidth, Throughput, and Latency Basics