The hosting service must include system administration since it is shared by many users; this is a benefit for users who do not want to deal with it, but a hindrance to power users who want more control. In general shared hosting will be inappropriate for users who require extensive software development outside what the hosting provider supports. Almost all applications intended to be on a standard web server work fine with a shared web hosting service. But on the other hand, shared hosting is cheaper than
Although this is not relevant to Search Engine Optimization, but this text is shown in search results page, this is the first impression of your website the user sees. Therefore, it is recommended that you use this tag.