Every site needs web hosting. Put simply web hosting is where the files, information and content that create your website live. These files are stored on a remote computer which is known as a host. If your website is painfully slow, it may be due to the quality of service that you receive from your hosting company.
There are many companies out there and it is hard to know who to choose. I have been using Siteground for my personal WordPress site for a few years. Recently, they improved the service and now the sites are super fast.
