I am intrigued by why you would want to access a Heat Pump through the cloud.
There are a few reasons.
I have the water set lower for economy and it is fine for showering. However, my wife doesn't find it hot enough for her bath. I can't put my toes in as I find it too hot. It would be nice to control the temperature boost without wandering out to the garage. This can be done using the cloud but costs a not insignificant £25 a year. Another £25 for the full monitoring. From looking at other companies they do not charge for these features. It galls me when the NIBE seems more expensive then other brands in the first place.
We are in an old house and although the GSHP has saved us a lot of money in heating bills and is working well we notice a drop in temperature (.5 ºC) when it is windy. Not much but the moving air currents make it feel colder. It would be nice to again select a degree higher if windy.
If the solar panels are doing well, I could select boost on the DHW from my pi.