1. Pricing Model: One key difference between AWS and Azure is their pricing model. AWS generally follows a pay-as-you-go model, where customers are charged based on their usage of services. On the other hand, Azure offers a hybrid pricing model that includes both pay-as-you-go and reserved instance options, allowing customers to save on costs by committing to a certain usage level for a period of time.

2. Geographical Availability: Another significant difference between AWS and Azure is their geographical availability. AWS has a wider global reach with more regions and availability zones compared to Azure. This broader coverage can be advantageous for businesses looking to deploy applications in different parts of the world and ensure low latency and high availability.

3. Service Offerings: AWS and Azure both offer a wide range of cloud services, but there are differences in the specific offerings available on each platform. AWS is known for its extensive portfolio of services, including AI/ML, IoT, and serverless computing. On the other hand, Azure has a strong focus on hybrid cloud solutions and provides services specific to Microsoft technologies such as Windows Server and SQL Server.

4. Market Share and Adoption: AWS has been a frontrunner in the cloud market for many years and has a larger market share compared to Azure. This dominant market position has led to greater adoption by enterprises and startups alike. Azure, on the other hand, has been rapidly gaining market share, especially among businesses that already use Microsoft products and services.

5. Open Source Support: When it comes to open source support, Azure has been more proactive in embracing and supporting open source technologies compared to AWS. Azure has partnerships with various open source communities and offers services and tools that integrate seamlessly with popular open source software, making it a favored choice for developers working in open source environments. AWS, while also supporting open source technologies, may not have the same level of integration and support as Azure.

6. Identity and Access Management (IAM): Both AWS and Azure provide IAM tools for managing user access and security, but there are differences in their approach. Azure's IAM solutions are deeply integrated with Active Directory and offer more granular control over permissions and access policies. In contrast, AWS IAM focuses on providing a robust set of features for access control, but may require some additional configuration for complex scenarios compared to Azure.

In Summary, AWS and Azure differ in their pricing models, geographical availability, service offerings, market share, open source support, and IAM capabilities in the cloud computing landscape.