You can access and use this PC through an internet connection from anywhere. Hosted desktop significantly lowers capital expenditure and allows for more flexible working.
Utilising a remote service for day to day working for employees can save businesses on capital expenditure as well as time. All these services can be used from anywhere with an internet connection, which in turn makes businesses more productive.
Working from a hosted desktop saves the need for a big bulky/powerful PC, allowing the business to buy just a bare minimum spec machine, then connecting that machine to a cloud environment thus using the resources of the data-centre rather than the local device.
This can be a clever and powerful way of getting the processing required at a low cost.