ZA is not the largest African economy (I believe Nigeria is slightly larger, but they also have ~4x the population to "brute force" the numbers), but it is the most developed with a good amount of techies in the area.
This means more workforce to hire from and more customers.
Central Africa from east to west won't have as nice latency, but it'll be potentially better than EU hosting - or at least it's another option available to them. However I doubt they had to suffer 200ms latency on a roundtrip to EU servers like the Southern Africa.
ZA is not the largest African economy (I believe Nigeria is slightly larger, but they also have ~4x the population to "brute force" the numbers), but it is the most developed with a good amount of techies in the area.
This means more workforce to hire from and more customers.
Central Africa from east to west won't have as nice latency, but it'll be potentially better than EU hosting - or at least it's another option available to them. However I doubt they had to suffer 200ms latency on a roundtrip to EU servers like the Southern Africa.