@stefano 
Using cloud directly for controlling / managing home electronics looks technically silly for me.
On the other hand, using cloud for backups, authentications for to-be-regintered managing device (i.e., PCs and/or smartphones. Ah, of course relyable / dependable mainframes whenever possible!) that the device really owned and handled by the owner of managed devices would be nice.
And of course, the home electronic devices should be controlled independently for safety (if, for example, if PID control of the temperature of bathes is done fully via  cloud...! Should be nightmare on cloud outages).