Best: As you know, it's free!!! And - Linux based: See e.g. their free, open 'cloud' - CoreOS: http://coreos.com
I am just asking myself, how long #Microsoft™ can survive that storm. Or #Nokia™, a M$ company now.
For me, as free world citizen, they have absolutelynothing to offer, except playing 'trojan horse' for US government "spying everywhere" muppets, see NSA_key in Wikipedia:
