Three deployment modes of Datang Mobile cloud computing platform

Introduction to Cloud computing concepts

After IBM and Google announced their collaboration in cloud Computing in October 2007, cloud computing attracted a lot of attention and quickly became the focus of industry and academia. Cloud computing is more advanced than traditional logical abstractions, and underneath it is the multi-level virtualization technology that enables the abstract process of physical motion to logical motion. At a high level, cloud computing is a resource integration and utilization technology, the underlying technical support is mainly virtualization technology.

Virtualization technology is the key technology to realize cloud computing. A single server can support multiple virtual machines running multiple operating systems and applications, thereby significantly increasing server utilization and providing flexible, scalable, platform services through virtualization to applications. Virtualization can save a lot of costs for global users, improve the efficiency of server operations, and more importantly, the next generation of data centers will also be based on virtualization to build, especially now popular cloud computing, is inseparable from the support of virtualization technology.

Cloud computing can be considered to include services at the following levels: infrastructure-level services (IaaS), platform-level services (PaaS), and software-level services (SaaS). Cloud computing services typically provide common, online business applications that are accessed via browsers, and software and data can be stored in data centers.

IaaS (infrastructure-as-a-Service): Infrastructure-level services. Consumers can get services from a sophisticated computer infrastructure through the Internet.

PaaS (platform-as-a-Service): platform-level services. PAAs actually refers to the software development platform as a service, in SaaS mode to submit to the user. Therefore, PAAs is also an application of the SaaS model. However, the advent of PAAs can accelerate the development of SaaS, especially the development of SaaS applications.

SaaS (software-as-a-Service): Software-level services. It is a mode of providing software over the Internet, and instead of buying software, users hire web-based software to manage business activities. SaaS solutions have obvious advantages over traditional software, including lower upfront costs, ease of maintenance, rapid deployment, and more.

(Responsible editor: The good of the Legacy)