Public cloud, as it provides unmatched scalability and cost-efficiency, ideal for handling peak loads, though the shared security model might not fully address the concerns for sensitive data.

Private cloud, offering the highest level of security and data control, customized to meet strict compliance requirements, but potentially at higher costs and with limited elasticity for scaling during peak times.

Hybrid cloud, blending the security and control of a private cloud for sensitive data with the scalability and cost-effectiveness of a public cloud for less sensitive operations, thus addressing both security and scalability needs despite increased management complexity.

Community cloud, tailored for organizations with similar regulatory needs, providing a shared infrastructure that balances security, scalability, and cost, but may offer less customization and control.