Cloud Infrastructure Security at Different Laevels

Cloud Computing is the collection of different types of hardware and software which delivers many services to the end-user over a network (typically the Internet). With cloud computing, users can access files and use applications from any device that can access the Internet. Now a day's cloud computing becomes more popular due to its few important attributes:multitenancy (single instance of software is used to run a service for multiple clients), massive scalability, elasticity, pay-per-use, and self-provisioning of resources. Cloud computing also delivers different types of services like Software-as-a-Service (SaaS), Platform-as-a-Services (PaaS) and Infrastructure-as-a-Services (IaaS). The current paper discussed infrastructure security at different levels:such as Application level, Host level and network leve