Containers share the host operating system's kernel, leading to quicker startup times and lower overhead compared to virtual machines. They offer more agility and resource efficiency, making them suitable for scalable applications.

Storing and managing encryption keys and secrets is not a feature provided by Oracle Cloud Infrastructure Security Zones. This functionality is typically handled by other services such as Oracle Key Management Service (KMS) or Vault.

An availability domain in Oracle Cloud Infrastructure refers to one or more data centers located within a region. Each availability domain is isolated from the others, with its own power, cooling, and networking to ensure fault tolerance and reliability.

Storing secrets in a vault provides greater security compared to storing them in code or configuration files. Vaults offer encryption, access controls, audit trails, and other security features to protect sensitive information from unauthorized access or exposure.

Running small personal websites typically do not require the scalability and performance capabilities provided by Oracle Cloud Infrastructure File Storage service. It may be more cost-effective and efficient to use other storage solutions for such workloads.