Cloud computing

Cloud computing is the delivery of computing services:
 Servers
 Storage
 Databases
 Networking
 Software analytics
 Intelligence
over the Internet (“the cloud”) to offer faster innovation, flexible
resources, and economies of scale.

 Lower computer costs
 Improved performance:
 Reduced software costs
 Instant software updates
 Improved document format compatibility
 Unlimited storage capacity
 Increased data reliability
 Universal document access
 Latest version availability
 Device independence

 IaaS is the delivery of technology infrastructure as an on demand scalable service.
 IaaS provides access to fundamental resources such as virtual machines, virtual
storage, etc.
 Usually billed based on usage.
 Can be coupled with Managed Services for OS and application support.
 Common IaaS business scenarios: Test and development, Website hosting, High-
performance computing, Big data analysis etc.

 PaaS provides the runtime environment for applications, development &
deployment tools, etc.
 PaaS provides all of the facilities required to support the complete life cycle of
building and delivering web applications and services entirely from the Internet.
 Typically applications must be developed with a particular platform in mind
 Multi tenant environments
 Highly scalable multi tier architecture

 SaaS model allows to use software applications as a service to end users.
 SaaS is a software delivery methodology that provides licensed multi-tenant
access to software and its functions remotely as a Web-based service.
 Usually billed based on usage
 Usually multi tenant environment
 Highly scalable architecture

 Requires a constant Internet connection
 Does not work well with low-speed connections
 Features might be limited
 Can be slow
 Stored data can be lost
 Stored data might not be secure

Cloud computing

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Cloud computing