We're using it for a bigish platform (10mm monthly uniques). PAAS Deployment is really nice. Also, knowing servers will be automatically patched in a timely m

We're using it for a bigish platform (10mm monthly uniques). PAAS Deployment is really nice. Also, knowing servers will be automatically patched in a timely manner is awesome. Support was very good but I've heard it's going downhill. SQL Azure is underpowered but highly durable and manages itself. If we really needed to scale up SQL the federations feature would work well. We've only had one brief SQL Azure outage in the last 2 yrs. We also have a DR site on AWS. AWS has a lot more bells and whistles and also had a nice head start. E.G. low-tech conveniences like sticky sessions on a load balancers or IP whitelisting on a variety of services are missing in Azure. Both services have had outages and we wouldn't feel safe using one exclusively.