In this chapter, we will learn the basics of the cloud and cloud security.
To understand cloud security, we first need to understand the types of clouds and their architecture. There are many global standard organizations such as NIST and CSA who are defining the different aspects of clouds.
As per the NIST definition of cloud computing (https://www.nist.gov/programs-projects/nist-cloud-computing-program-nccp), in simple terms we can say that the cloud offers on-demand accessibility of computing, networking, storage, databases, and applications. Here you do not have to worry about the purchase of physical boxes (CapEx) to run your application. You pay the cost of the resource based on the usage (OpEx).