Microsoft Azure has recovered from a service disruption related to Azure DNS that affected customers in all regions on September 15. The outage affected a subset of customers and additionally impacted Azure’s SQL Database, Virtual Machines, Visual Studio Team Services, Service Bus, API Management, and App Service\Web Apps. Available in preview, Azure DNS allows customers to host their DNS domains in Azure. The September 15 Azure DNS outage follows upon an Azure outage that affected customers in Europe on September 9 for several hours. Both outages are notable because they span multiple regions. Even though the Azure DNS outage is resolved as of the evening of September 15, customer concerns are beginning to proliferate about the reliability of Azure’s global architecture, particularly given that recent outages featured spillover effects to other services and products in conjunction with impacts that spanned multiple regions.