Final answer:
In the NIST Cloud Computing Reference Architecture, the two actors among the major five are Consumers and Service Providers. Consumers use cloud services, while Service Providers offer these services.
Step-by-step explanation:
The NIST Cloud Computing Reference Architecture identifies several key actors involved in cloud computing. Among the options provided, the two that are included in the major five actors are:
- Consumers
- Service Providers
Consumers are individuals or organizations that use cloud services for their benefits, whereas Service Providers are entities that provide cloud services. The other three major actors that complete the five are: Cloud Carrier, Cloud Auditor, and Cloud Broker, according to the NIST framework.