With the rapid development of cloud computing

the traditional security methods of fixed boundaries and devices have experienced technical incompatibility and exhausted operation and maintenance in the era of cloud security. Software define everything is applicable to solve the systemic problems faced in cloud computing. The software definition security is lightweight

easy to deploy

highly compatible

and programmable. Combined with the idea of adaptive security architecture proposed by Gartner

it is designed to be adaptive. This architecture can be divided into management orchestration layer

control layer

business layer and physical layer. It is a loosely coupled module combination form

open standard external interface

compatible with the use and docking of new technologies

and realizes the automatic arrangement of virtual security network elements

thus adapt to the security closed loop.