When a cloud service provider receives an eDiscovery order pertaining to one of their customers, the first action they must take is to notify the customer. This allows the customer to be aware of what was received, as well as to conduct a review to determine if any challenges are necessary or warranted. Taking snapshots of virtual machines, copying data, and escrowing encryption keys are all processes involved in the actual collection of data and should not be performed until the customer has been notified of the request.

JavaScript Object Notation (JSON) and Extensible Markup Language (XML) are the most commonly used data formats for the Representational State Transfer (REST) API and are typically implemented with caching for increased scalability and performance. 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.
HTML is used for authoring web pages for consumption by web browsers

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

Explanation
NIST Special Publications 800-145 is titled "The NIST Definition of Cloud Computing" and contains definitions and explanations of core cloud concepts and components.