“Server resources” is a commonly used term in the web hosting industry that is used to describe the amount of power and performance your site has available to it. Every web hosting plan is simply a service that lets you rent a web server, or a portion of a web server. Thus, server resources are actually the features and capabilities of your web hosting plan. The more server resources your site has access to, the better it will perform.
Sites that lack adequate server resources usually suffer from slow page loading times and even site down time occasionally. If you want your site visitors to have the most enjoyable experience possible, then you will need a web hosting plan that provides ample server resources at all times.