Azure / AWS Cloud hosting vs OVH etc

Hi all,

Has anyone hosted servers on Azure / AWS rather than OVH etc?

Was performance different on one or another?
Any bandwidth differences?
Cost? Was it cheaper on one or the other?
Has Azure/AWS provided other capabilities OVH etc couldn't?

I'm curious to see if it's worth using cloud services like Azure / AWS over OVH or other private cloud services or if it's more expensive / less performance etc.