IaaS: Infrastructure as a Service


IaaS gives
us the computing facilities, virtual or physical machines. By paying the
required amount, third parties allow users to install their virtual server on
their systems. However, IaaS users need to manage their data, OS, applications

Examples are Amazon Elastic Compute Cloud, Windows Azure


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 only
take care of applications.

Examples Google
app, Apache Stratos sec.


SaaS: Software as a Service


 SaaS uses the
internet to deliver applications to its users. We don’t need to buy or download
apps to use it for examples Gmail, on PCs majority of the users use web
browsers to access it.

Examples Gmail,
Facebook etc.



Cloud Services: – Cloud Services help users to
install and manage Virtual Machines and Applications without the need of
physical machines. It means we will focus more on apps not on hardware, will
save money and meet our demands. It comes with health monitoring and load
balancing. without compromising anything. Moreover, we can test our
Applications before bringing it into action.


Virtual machine: Most important feature is that we
can 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 supports
Linux, Windows SQL Server, Oracle, IBM and SAP.





Network: –
In Azure we have our own Private network. We can set our own IP addresses and
DNS Servers and Connection is secured with IPsec VPN or with ExpressRoute. Traffic
in one or more regions of Azure always stays in Azure network it is not on
Internet. So, as we are using our own private ip addresses and subnets it is same
as we own a datacenter.

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