Object storage runs on its own independent systems, which have their own redundancy and distribution. To ensure data consistency, sufficient time is needed for objects to fully replicate to all potential locations before being accessed. Object storage is optimized for high availability and will not be any less reliable than any other virtual machine within a cloud environment. It is hosted on a separate system that does not have dependencies in local host servers for access control, and it is optimized for files of all different sizes and uses.

When leasing space in a data center versus utilizing cloud services, a customer has a much greater control over its systems and services, from both the hardware/software perspective and the operational management perspective. Costs, regulations, and security are all prime considerations regardless of the hosting type selected. Although regulations will be the same in either hosting solution, in most instances, costs and security will be greater factors with leased space.

When a key management system is outside of the cloud environment hosting the application, availability is a primary concern because any access issues with the encryption keys will render the entire application unusable.

Explanation
XML firewalls are most commonly deployed in line between the firewall and application server to validate XML code before it reaches the application.