Which of the following APIs are most commonly used within a cloud environment? 

Answer options:

A. REST and SAML
B. SOAP and REST
C. REST and XML
D. XML and SAML

B

Simple Object Access Protocol (SOAP) and Representational State Transfer (REST) are the most commonly used APIs within a cloud environment. 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.