Compairison between Service Models

Items	On Premise Hardware	Infrastructure as a Service	Platform as a Service	Software as a Service
Application	❌	❌	❌	✅
Data	❌	❌	❌	✅
Runtime	❌	❌	✅	✅
Middleware	❌	❌	✅	✅
OS	❌	❌	✅	✅
Virtualization	❌	✅	✅	✅
Servers	❌	✅	✅	✅
Storage	❌	✅	✅	✅
Network	❌	✅	✅	✅

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❌ handled by you, ✅ handled by CSP

Infrastructure As a Service

• Provides Building blocks for Cloud IT
• Provides Networking, Computing and Data Storage Space
• Gives us highest level of flexiblity
• Easy to parallel with traditional on-premise IT
• Example: Amazon EC2, GCP, Azure, Rackspace, Digital Ocean, Linode

Platform As a Service

• Remove the need for our organisation to manage the underlaying IT infrastructure.
• Focus on Deployment and Management of Applications.
• Example: Amazon Elastic Beanstalk, Heroku, Google App Engine, Windows Azure

Software As a Service

• Complete Service/Product, that is run and managed by the service provider.
• Example: Gmail, Dropbox, Zoom