Cloud computing systems generally think of three types: Iaas,paas,saas.
IaaS is infrastructure-as-a-service, which is the infrastructure that is provided to the user as a service. such as Amazon's AWS and S3
PAAs is the platform as a service, that is, the platform as a service to enable users to develop applications, such as Google App Engine,sina app Engine, as well as Microsoft's Azure and so on.
SaaS is software-as-a-service, which is the provision of software as a service to everyone, such as Google Docs.
Big Data: The word is a bit virtual, it can be simply understood as a large amount of data, in fact, today's large amount of data tomorrow will become a small data, so the word is a virtual goods.
about what big data-processing platform is, nothing more than Hadoop, the distributed software, or storm, the flow computing model software.
But the people who design Hadoop and Storm are really good at software design, and that's what I admire and pursue.
Understanding of cloud computing and big data