The current Congo outbreak is of Bundibugyo Virus(BDBV), a different species of orthoebolavirus that is less treatable than EBOV.

There are monoclonal antibody treatments not specifically designed for BDBV that offer limited protection against worse outcome for BDBV, but I don’t think the prognosis is great for the people getting affected because the MABs available only offer limited neutralising ability. There is also not yet an effective vaccine for BDBV.

There are cultural funeral practices that are contributing to the spread of BDBV in Congo (i.e. people demanding that tradition be followed when it is likely to infect them), and inequalities in access to care which I’m sure have some impact.

However, ultimately there is nothing Africa-specific about the family of viruses (apart from which wildlife they originated in) that mean they couldn’t spread in another country or have similar case-fatality rates there.

And a cloud provider that hosts things. That’s like saying ‘because Amazon is an online bookseller’, or ‘because Google is a search engine’, when both have significant lines of business (in Amazon’s case, bigger than their original business) hosting things for others.

In Yandex’s case, some of those will be military stuff, some will be troll farms, and some will be running things for Russian businesses.