An Internet Service Provider (ISP) is the term for the company that is able to provide people with access to the Internet, typically from a computer. The largest national and regional ISPs are AT&T WorldNet, IBM Global Network, MCI, Netcom, UUNet, and PSINet.
Usually the ISP is usually a “cablecompany” that, in addition offer a TV subscription. The ISP is the link between a computer and all the other “servers” on the Internet. For example, when you send an email, it goes from your computer, to the ISP computers/servers, where it’s sent along to its destination through other servers on the network.
An IP address (Internet Protocol address) is used to identify computers on the Internet. It works like a return address would on a letter.
When your computer or device sends a request, like a search on Google, it tags the request with your IP address. That way Google knows where to send the response. My public IP address 18.104.22.168. I found my IP address by searching on Google “what’s my IP address”.