Internet transit

Technically, it consists of two bundled services: In the 1970s and early 1980s-era Internet, the assumption was made that all networks would provide full transit for one another.

[1] In the 1990s, the network access point concept provided one form of transit.

[2] Pricing for the internet transit varies at different times and geographical locations.

[3] The transit service is typically priced per megabit per second per month,[4] and customers are often required to commit to a minimum volume of bandwidth, and usually to a minimum term of service as well, usually using a 95e percentile burstable billing scheme.

Some transit agreements provide "service-level agreements" which purport to offer money-back guarantees of performance between the customer's Internet connection and specific points on the Internet, typically major Internet exchange points within a continental geography such as North America.

Diagram of transit (red lines; arrows indicate direction of payment) and peering (green lines) interrelationships between the four types of Autonomous Systems (ASes) of which the Internet is composed. Type 1 networks have "single homed" transit, while type 2 networks have "multi-homed" transit.