Representational State Transfer (REST) is a software architectural scheme that applies the components, connectors, and data conduits for many web applications used on the Internet. It uses and relies on the HTTP protocol and supports a variety of data formats. Extensible Markup Language (XML) and Security Assertion Markup Language (SAML) are both standards for exchanging encoded data between two parties, with XML being for more general use and SAML focused on authentication and authorization data.
Secure Shell client (SSH) is a secure method for allowing remote login to systems over a network.

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A keyboard-video-mouse (KVM) system is commonly used for directly accessing server terminals in a data center. It is not a method that would be possible within a cloud environment, primarily due to the use virtualized systems, but also because only the cloud provider's staff would be allowed the physical access to hardware systems that's provided by a KVM. Hypertext Transfer Protocol Secure (HTTPS), virtual private network (VPN), and Transport Layer Security (TLS) are all technologies and protocols that are widely used with cloud implementations for secure access to systems and services.

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When a security professional is considering cloud solutions for BCDR, a top concern is the jurisdiction where the cloud systems are hosted. If the jurisdiction is different from where the production systems are hosted, they may be subjected to different regulations and controls, which would make a seamless BCDR solution far more difficult.

With multiple tenants within the same hosting environment, any failure to properly classify data may lead to potential exposure to other customers and applications within the same environment.