An Internet service provider (ISP) is an organization that provides end-users, both consumers and organizations, with access to the Internet. The majority of ISP's are privately owned for-profit businesses, however, some are run by non-profit organizations such as schools or communities. ISPs employ several different technologies to provide connectivity. These include dial-up service via phone lines, cable-based service, and wireless connectivity.

Employees of a company, or students at a college or university, sometimes get free Internet service as a prerequisite. Some ISPs charge for their services by subscription, usually on a contract that can be renewed by the month, year, or longer term. Others provide free Internet access, and make their money by accepting advertising, which you will usually see along the borders of your computer screen, or in the form of pop-ups.

Many ISPs belong to a tiered network system. That is, your ISP might be part of a network of ISPs, all of which are served by a higher tier of ISPs that are in turn connected to a large, centralized company. In many parts of the world, ISPs cooperate with law enforcement and intelligence-gathering operations that monitor people's use of the Internet.

When choosing an ISP, consider how you will be using it and what capabilities you will require. Most consumers consider speed, security, and reliability as their top priorities.

To learn more about choosing an ISP:

Choosing an ISP
Choosing an ISP for a Home Business