Among all the types of web hosting, the server that will cost you the least amount of money is, for a very obvious reason, one thats for free. In fact, free hosting servers dont cost you anything at all. Like the other kinds of web host service providers, these are also run by web hosting sites, except that they dont earn profit by directly charging their users. Instead, they use attract many webmasters and put up paid advertising on their websites.
These advertisements make money for the web hosting site, so the trade-off for webmasters who get a free server is that they have to leave space for advertising showing up on their website. While this kind of server might be the cheapest, it doesnt mean that its the most cost-effective if youre factoring in quality service. But it may be sufficient for certain types of websites. After all, why pay for hosting when you dont need whatever you can get from the added payments?