Comparing Azure and AWS is a bit like comparing apples and oranges. Each platform has features that either duplicate or overlap with features of the other platform.
In reality the focus needs to be on solving the business problem and not the technology problem. That being said a lot of companies either have both platforms or are struggling with deciding on, or moving from, one or the other.
Last night at the Nashville Microsoft Azure Users Group I presented a technical comparison of Azure and AWS features.
Despite my admitted bias towards Azure I nevertheless believe that I was pretty fair and objective. 
The topics I covered were:
– Cloud Service Models
– Deployment, Management and Automation
– Compute
– Storage
– Messaging
– Email
– Networking
– Security and Identity
– Operating System & Data Transfer
– Internet of Things (IoT)
– Development Languages and Runtime Support
– Marketplaces
– Media Services
– Mobile Services
– Visualization
– Machine Learning
– Non-Technical Considerations
– Pricing Models
The deck from that presentation is in the files section of the Nashville Microsoft Azure Users Group.
Bill
Cloudy In Nashville 
Azure is leading in the cloud industry, they have been increasing their feature, but sometimes Amazon overtakes them. But Google is coming behind both of these leaders. However, we cannot guess when Google hits the industry with some unexpected features.
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