http://www.cio.com/article/3093453/cloud-computing/businesses-struggle-to-hire-workers-with-cloud-skills.html
https://www.cloudfoundry.org/growing-need-for-cloud-skills-at-global-2000-enterprises-driving-worldwide-developer-shortage-according-to-cloud-foundry-report/
http://www.cmswire.com/cms/information-management/tackling-the-cloud-skills-shortage-027750.php
Microsoft Azure has made a tremendous progress in last 2-3 years and giving a tough competition to the AWS Public Cloud for first place. More and more organizations are migrating of Microsoft Office 365 from traditional on-premise Exchange and SharePoint environments. Azure platform seamlessly integrate with Office 365 - which is another reason organizations are choosing Azure for there workloads.
These are some resources I came across for Microsoft Azure Free Training:
Microsoft Virtual Academy: https://mva.microsoft.com/product-training/microsoft-azure
Architecting Microsoft Azure Solutions : https://courses.edx.org/course_modes/choose/course-v1:Microsoft+DEV205Bx+3T2016/