Cloud Computing applications are something which we use very often in our life but we don’t realize that we are using it. For example, if we are using Google, Yahoo, or any other service for drafting emails, streaming movies or for our professional purposes, everything is making use of all the services powered by cloud computing.
In technical terms, cloud computing provides services like online disk storage, database, networking, etc.
Basically, cloud computing provides services in 3 forms
IaaS: For a small startup or organization, it is economical to set up their own server and data center. IaaS is very helpful for these types of organizations. It will provide them with access to infrastructures like storage, security, and other facilities. Another positive aspect of IaaS is that cloud providers will charge you only according to the services you have used. With IaaS, the entrepreneurs can solely concentrate on the business without worrying about other issues. In this type of service, the cloud provider will have control of services providing to cloud consumer.
PaaS: If we want to launch a website we can hire people. But if we want to launch a professional business website, we have to hire and maintain efficient developers, which is quite difficult in the nowadays competitive world. PaaS provides total web engineering packages like designing, coding, updating and management of website along with the infrastructure services. In PaaS, the cloud provider will have control up to some extent on sources of cloud consumer.
SaaS: It provides apps like Microsoft Office and tools like calendars and clocks along with infrastructure and web services. It allows the users to use their software either online or offline at an affordable cost. In SaaS, the cloud provider will have full control of the resources of cloud consumers.
In cloud computing, the service providers will service mainly in the form of private, public and hybrid clouds.
Private cloud is only for the single organization, that is. it maintains the database of that organization and provides services according to the requirements of the organization and charge accordingly.
Public cloud is operated by third party service providers and it will provide services for different organizations at the same time.
Hybrid cloud provides services of both private and public cloud services to the organizations.
Cloud computing's main concern is security and less control of cloud consumer data and other resources. Cloud service providers can access the information of clients anywhere and anytime. Trust is the main aspect of cloud computing.
Many people assume cloud and Internet are the same. The Internet provides services for all web resources but cloud provides services for scalable resources we are paying for. Cloud has some boundaries when compared to the internet.
In cloud computing, the data or resources will be stored on servers and can be controlled by cloud providers. We can use these resources only with help of an active internet connection.
Some examples of cloud computing are Google docs, Media Max, etc. Cloud computing is famous for cost reduction and reliability.
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