Distance is what makes a web application feel slow
When you use an application through a browser it is easy to forget that the server may be thousands of kilometres away, on another continent. Reaching a good European server from within Europe may cost around 200 ms per page, while reaching it from the other side of the world can cost several times that, on every single screen.
That is why DGAssistant runs from three regional data centres -Europe, America and Asia-Pacific-, each with at least two servers working, which gives both availability and a response time that matches where you actually are.