Its a bit of both. Internationally I find I can't trust the network maps of the connectivity vendors and I'm better going for two separate companies (ones which are part of different subsea cables -- e.g. Wiocc on Eassy and Safaricom on TEAMS).
Of course I had one failure in Delhi which the provider blamed on 5 separate fibre cuts. Long distance circuits can run via areas where they can sustain multiple cuts across large amounts of area (regional flooding is a good one), and fixing isn't instant. This can be mittigated a little, but you still end up with circuit issues -- I had two fibre runs into Shetland the other month. Frist one was cut, c'est la vie. Second one was cut, had to use a very limited RF link. There's only so much you can do.
On the other hand I've just been given a BT Openreach plan which lists any pinch points of a new RO2 EAD install, I can see the closest the two get during transport is about 400m (aside from the end point of course, and experience has taught me I can trust it.
Of course I had one failure in Delhi which the provider blamed on 5 separate fibre cuts. Long distance circuits can run via areas where they can sustain multiple cuts across large amounts of area (regional flooding is a good one), and fixing isn't instant. This can be mittigated a little, but you still end up with circuit issues -- I had two fibre runs into Shetland the other month. Frist one was cut, c'est la vie. Second one was cut, had to use a very limited RF link. There's only so much you can do.
On the other hand I've just been given a BT Openreach plan which lists any pinch points of a new RO2 EAD install, I can see the closest the two get during transport is about 400m (aside from the end point of course, and experience has taught me I can trust it.