John Hall writes in Networking+ on the growth in Edge Data Centres and how latency with IP transit costs can be significantly improved.
Performing much of the data processing, control and management of local applications in edge colocation data centres allows latency to be reduced and application responsiveness optimised. At the same time, data transit costs can be significantly reduced by eliminating the need to send everything back to centralised clouds – often hosted in large data centres located hundreds of miles away.
Read more here on page 7 :-
https://networkingplus.co.uk/Media/Default/archive/Net2111.pdf
