IaaS: Infrastructure as a Service IaaS givesus the computing facilities, virtual or physical machines. By paying therequired amount, third parties allow users to install their virtual server ontheir systems.
However, IaaS users need to manage their data, OS, applicationsetc.Examples are Amazon Elastic Compute Cloud, Windows Azureetc. PaaS: Platform as a Service PaaS gives us operating system,programming, database, web server etc. it is just a layer on top of the IaaS.In this all networks can be monitored by third party however developers onlytake care of applications.Examples Googleapp, Apache Stratos sec. SaaS: Software as a Service SaaS uses theinternet to deliver applications to its users. We don’t need to buy or downloadapps to use it for examples Gmail, on PCs majority of the users use webbrowsers to access it.
Examples Gmail,Facebook etc.· Compute Cloud Services: – Cloud Services help users toinstall and manage Virtual Machines and Applications without the need ofphysical machines. It means we will focus more on apps not on hardware, willsave money and meet our demands. It comes with health monitoring and loadbalancing. without compromising anything.
Moreover, we can test ourApplications before bringing it into action. Virtual machine: Most important feature is that wecan create windows virtual machine in seconds. We can also encrypt our data,can easily protect our data and machines from hackers or from viruses. It also supportsLinux, Windows SQL Server, Oracle, IBM and SAP.
· Networking Virtual Network: – In Azure we have our own Privatenetwork. We can set our own IP addresses and DNS Servers and Connection issecured with IPsec VPN or with ExpressRoute. Traffic in one or more regions ofAzure always stays in Azure network it is not on Internet. So, as we are usingour own private ip addresses and subnets it is same as we own a datacenter. Traffic Manager: – wecan statically router incoming traffic for better performance.
It automaticallyhelps to enhance the responsiveness of our apps with better cloud migration. Itcan improve the availability of apps that we use by checking azure services orexternal and can easily automatically direct user to new location in case offailure.