Understanding Cloud Computing¶

Traditional Data Centers¶

Traditional Data Centers requires :

• Large up-front investment
• forecasting demand is difficult
• slow to deploy new data centers and servers
• maintaining data centers is expensive
• you own all of the security and compliance burden

Benefits of Cloud Computing¶

• Trade capital expense for variable expenses
• benefits from massive economies of scale
• stop guessing capacity
• increase speed and agility
• stop spending money maintaining data centers
• go global in minutes

Elasticity is the ability to acquire resources as you need them and release resources when you no longer need them. In the cloud, you want to do this automatically.

Reliability

Agility : The cloud lowers the cost of trying new ideas of business processes.

Fundamentals of Cloud Computing¶

Cloud Computing is the on-demand delivery of compute power, database, storage, application, and other IT resources through cloud services resources through cloud services platform via the Internet with pay-as-you-go pricing.

Cloud Computing Models

• IaaS (Infrastructure as a Service): Max Control, Max Maintenance
• PaaS (Platform as a Service): Beanstalk
• SaaS(Software as a Service): Min Maintenance, Min Control

Cloud Deployment Models

• Public Cloud : Deployed onto a public cloud provider like AWS
• On-Premises (Private Cloud) : Cloud-like platform in a private data center.
• Hybrid (Cloud applications connected to a private data center)