Starting January 8, 2018, developer services in the classic portal will be available only in the Azure portal. We encourage current customers of dev services to try them out in the portal and give us feedback. The migration includes dev services visible in the marketplace tab such as ClearDB, Sendgrid, Raygun, Mailchimp, AbbyyCloudReader etc.
After January 8, any customer visiting the classic portal will be forwarded to the Azure portal. Dev services will be visible as Classic Dev Services resources in the All Resources list.