In a "Private Cloud" model, an organization exclusively owns and maintains the cloud infrastructure. It is not shared with other organizations and is hosted on-premises or in a dedicated environment. This provides greater control and security but requires more resources.

In a microservices architecture, services should be loosely coupled to allow for flexibility, independent scaling, and easy replacement without affecting the entire system.

Control is a critical aspect that some businesses may worry about in a SaaS model, as they have limited control over the software's behavior and data.

Microsoft Azure offers Azure SQL Database, a managed SQL database service that seamlessly integrates with Microsoft products, making it a natural fit.

'Fault Tolerance' ensures that a cloud service remains operational despite server failures. This typically involves redundant systems or failover mechanisms to maintain service availability.

Google Cloud Storage Triggers (Notifications) can automatically trigger a function when objects are uploaded to a bucket, enabling immediate processing.

Amazon S3 (Simple Storage Service) is AWS's primary service for object storage. It provides scalable, durable, and highly available object storage in the cloud, commonly used for data and file storage.

Paravirtualization requires modifying the guest OS to improve performance, whereas full virtualization does not require such modifications.

Private Clouds are typically associated with higher upfront costs because organizations need to invest in their infrastructure and management. Public clouds share resources and costs with multiple organizations.

A hybrid cloud combines public and private cloud infrastructure, whereas a multi-cloud involves using services from different cloud providers, which may not be public-private mix.