Cloud Overview:
Definition:
Cloud computing refers to the on-demanddelivery of IT resources and applications via the internet with pay as you go.
If we need we can get it right away
If we don’t we can give it away.
These services are available over internet, we just need web browser and internet connection, we can request computing or storage infrastructure
Pay as you go: postpaid mobile bill or electricity bill
SAAS – Software as service
Cloud Computing: The practice of using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server or a personal computer
Features:
On demand provisioning
Scalability in minutes: we can scale out, or scale in
Horizonal scalability: can scale from 1 instance to several instances
Or can scale down from several instances to 1
Vertical Scalability: can go from 1GB RAM to 100GB RAM – for a single machine
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