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

182 Chapter 10 Defining Candidate Data, Services, and Processes for the Clouds
Data
Services
Processes
Data
Data
Data
Data
Figure 10.1
Here we have all data, services, and processes identified and detailed.
Figure 10.2 shows the same data, services, and processes that are relocated
to cloud computing platforms, in this case, infrastructure-as-a-service,
platform-as-a-service, and a single database to database-as-a-service. We now
have the architectural components—processes, services, and data—existing
across various platforms, both on-premise and cloud computing based.
We chose the right locations for the data, services, and processes, and thus
for the applications, on the basis of three factors: the analysis we suggest in this
chapter, the business case from Chapter 4, “Making the Business Case for
Clouds” and our own IT requirements, such as the need for agility, performance,
security, and compliance. Which services, processes, and data should exist For
what reason Where should they reside If we are locating them to cloud computing,
what type of cloud computing platform should we use And which
cloud computing provider should we choose There is a lot to think about, and
much of it is domain dependent. This book provides some guidance, its better
architecture forethought is also required to make the right calls.