Lightmass servers: are there any solution?

Lightmass calculations are super intensive. Each time I build lightings it takes 15 hours in my PC (AMD A8-6600K 3.9GHz 8GB RAM), and the PC freezes useless during that time.

So I was wondering if is there any company, Epic or any others, offering cloud computing off-the-shelf for lightmass calculations, a kind of Amazon AWS that offer everything for externalizing the lightmass calculation to a server?

I think Unity has started to offer something similar with Unity 5.

Unity is offering cloud builds but I don’t think they are offering servers to bake the lighting. We are in the process of setting something up here, it’s just going through internal testing before we are able to roll it out to the public.