More than any other time in the history of the internet, staying up and running without any downtime is crucial.  When companies have their internet access go down, they lose thousands and thousands of dollars every hour or every day.  Our society has become so reliant on the World Wide Web, without it, we would be in big trouble.  The internet keeps businesses connected with vendors, suppliers, competitors, market information, employees, and so on, meaning without it business would die!