I get asked the same questions over and over again by new customers looking to setup a web site and also when the inevitable bills come in for your existing setup. Why do I have 4 or 5 separate bills for internet? Is a common one.
I have created the following diagram which hopefully illustrates the purposes of all the various “services” and approximate costs. Note that not all organisations will have all services but these are some common ones.
If you want the high quality printable PDF drop me an email. I hope this helps, if not let me know and I’ll bring my big black “Texta” pen and draw all over yours next time I see you :-).