IP Transit What is IP Transit? IP transit is a service that allows networks to access the global internet by purchasing bandwidth from upstream providers. It is essential for connecting smaller networks to the wider internet. Explanation IP transit providers route data between different networks, ensuring reliable and efficient global communication. Businesses and ISPs often rely on these services for internet connectivity. Practical Example of IP Transit An ISP purchases IP transit services from a Tier 1 network provider to offer internet access to its customers.