Cloud Computing and SOA Convergence in Your Enterprise: A Step ...

38 Chapter 3 Defining the Clouds for the Enterprise
In Chapter 2, “Reaching for the Clouds,” we talked conceptually about
cloud computing, but concepts do not build architectures—solutions do. In
this chapter, discuss the component parts of cloud computing introduced in
Chapter 1, “Where We Are, How We Got Here, and How to Fix It,” and examine
each in detail.
As you may recall, cloud computing has the following components:
1. Storage-as-a-service
2. Database-as-a-service
3. Information-as-a-service
4. Process-as-a-service
5. Application-as-a-service
6. Platform-as-a-service
7. Integration-as-a-service
8. Security-as-a-service
9. Management/governance-as-a-service
10. Testing-as-a-service
11. Infrastructure-as-a-service (see Figure 3.1)
This chapter focuses on the advantages and disadvantages of each category
of cloud services. The objective is to arm you with enough information to
Testing-as-a-Service
Management/Governance-as-a-Service
Security-as-a-Service
Integration-as-a-Service
Application-as-a-Service
Process-as-a-Service
Information-as-a-Service
Database-as-a-Service
Storage-as-a-Service
Platform-as-a-Service
Infrastructure-as-a-Service
Figure 3.1
Components or categories of cloud computing.