Tier 1 Network What is a Tier 1 Network? A Tier 1 network is a large internet backbone provider that can connect to all other networks without purchasing IP transit, ensuring seamless global connectivity. Explanation Tier 1 networks form the core of the internet, exchanging traffic with other networks through peering agreements. They play a crucial role in maintaining global data flow. Practical Example of a Tier 1 Network A major ISP relies on a Tier 1 network to provide its customers with reliable and fast internet access across the globe.