Every site on the internet is stored somewhere. When people visit a website, pages of information come to life. A Hosting Provider stores or hosts your website so that it is accessable to everyone.
Unfortunatly hosting services are often over-subscribed, basically too many websites/resources. This is where we are different in monitoring all websites and their performance to ensure sites are not suffereing.
All hosting plans come with a daily backup schedule for wordpress with a 30 day retention (other options available).