Amazon Athena is a serverless and fully managed analytics tool provided by AWS. It doesn't require infrastructure provisioning and can execute SQL queries on data stored in Amazon S3, making it a convenient choice for serverless analytics.

A community cloud serves multiple organizations with common concerns, offering a shared cloud infrastructure tailored to their specific needs.

A Customer Relationship Management (CRM) system is specialized for managing customer interactions, leads, and sales opportunities, making it the most beneficial choice for the sales team's needs.

VM escape attacks are a significant security concern where a malicious VM tries to break out of its virtual environment and access the host system, potentially compromising security.

A cloud-based data lake is primarily used for storing unstructured data like raw text, images, audio, or log files, enabling flexible and scalable data storage for later processing and analysis.

The "rehosting" strategy, often referred to as the "lift-and-shift" approach, involves moving applications to the cloud without major modifications.

Identity Middleware is responsible for authenticating users, authorizing their access, and accounting for their activities. It ensures secure user management.

Multi-tenancy is a core concept in SaaS. It refers to the ability of a single instance of a software application to serve multiple customers (tenants). It enhances scalability and resource utilization in SaaS environments.

Community clouds allow organizations to share the regulatory compliance burden with similar entities, reducing the cost and complexity of meeting strict regulations.

Availability is the aspect of cloud services that guarantees they are consistently accessible over a network using standard methods, promoting reliability and dependability.