Answer: D. Security.
Explanation: D. Security.
In a web database architecture, the primary concern is usually security. Web databases are often used to store sensitive or confidential information, such as personal data, financial information, or proprietary business data. As such, it is critical to ensure that the database and its associated software and services are designed and configured in a way that minimizes the risk of unauthorized access, data breaches, and other security incidents.
To ensure the security of a web database architecture, a variety of security measures can be employed, including access controls, authentication and authorization mechanisms, encryption, and regular security audits and testing. Additionally, it is important to follow established security best practices and standards, such as those outlined by organizations like the National Institute of Standards and Technology (NIST) and the International Organization for Standardization (ISO).
While other factors such as hardware, software, services, and elasticity are also important considerations in web database architecture, security is typically the primary concern given the sensitive nature of the data being stored and processed.