Eh, fair - I think we have differing definitions of centralization, though I can see that yours is actually more accurate. I was using it not to mean "a lot of

Eh, fair - I think we have differing definitions of centralization, though I can see that yours is actually more accurate. I was using it not to mean "a lot of traffic goes through this thing", but rather "it would be difficult for users of this service to migrate away from it if they wanted to", which I guess is more like "lock-in-iness". The SPOF property you describe is indeed undesirable and important to be aware of!