The service that allows a network to access the entire internet is the backbone of global connectivity. It’s the mechanism by which an Internet Service Provider (ISP) or other network operator purchases connectivity to the broader internet from a larger provider. This purchased connectivity enables the smaller network to exchange data with any destination on the internet, effectively acting as a gateway to the global network. For example, a small regional ISP might purchase this service from a Tier 1 provider to ensure its customers can reach websites and services hosted anywhere in the world.
This arrangement is crucial for network operators lacking a widespread, independently maintained network infrastructure. Its importance lies in the ability to offer complete internet access to end-users without the significant investment and ongoing maintenance required to build and manage a global network. Historically, the development of such services has allowed smaller ISPs to flourish and expand internet access to a wider population, as they could leverage the existing infrastructure of larger providers. The ability to purchase this connectivity removes barriers to entry for new network operators, fostering competition and innovation in the internet access market.
