Shared web hosting service refers to a web hosting service where many websites reside on one web server connected to the Internet. This is generally the most economical option for hosting, as the overall cost of server maintenance is amortized over many customers.
The "shared" in shared hosting refers to the fact that multiple websites are sharing a single web server. Shared is a perfect option for new bloggers or small websites that are just getting started online who need an economical option. As your site traffic grows, you can seamlessly upgrade at any time to a different hosting plan such as cloud hosting.