Key concepts for web 2.0 is
1)interpersonal computing
ie community site ,facebook, youtube
2) Web service
3)Software as a service(Saas)
Sunday, August 2, 2009
Cloud Computing
Cloud Computing is a concept by which we can use software as a service (Saas) as well as hardware as services ie utility services.
An Example for
Saas is salsforce.com(CRM) and
Haas is Amazon EC2 (Elastic Compute Cloud) is a computing service. One allocates a set of hosts, and runs one's application on them, then, when done, de-allocates the hosts. Billing is hourly per host. Thus EC2 permits one to deploy Hadoop on a cluster without having to own and operate that cluster, but rather renting it on an hourly basis.
An Example for
Saas is salsforce.com(CRM) and
Haas is Amazon EC2 (Elastic Compute Cloud) is a computing service. One allocates a set of hosts, and runs one's application on them, then, when done, de-allocates the hosts. Billing is hourly per host. Thus EC2 permits one to deploy Hadoop on a cluster without having to own and operate that cluster, but rather renting it on an hourly basis.
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