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Cloud Computing

PaaS

Cloud Software Development Training

IMC Institute

March 2015

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Cloud Client Architecture

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Mainframe

Client/Server

Web Generation

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Cloud Computing

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The new IT era

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Cloud/Client Architecture: Gartner

  • Mobile computing and cloud computing continue to converge
  • Centrally coordinated applications that can be delivered to any device will continue to grow.
  • Cloud computing is the foundation of elastically scalable, self-service computing
  • Apps that use intelligence and storage of client device effectively will benefit from lowering bandwidth costs.
  • Expect to be able to use application simultaneously on mulitple devices

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PaaS

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Enterprise IT in 2010

Source:WSO2

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Enterprise IT in 2015+

Source:WSO2

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Roles for PaaS

  • Super-Tenant (and related roles)
    • Configures and manages operations across subtenants and applications during the entire lifecycle
    • Defines the lifecycle
  • Tenant
    • Can build, integrate, test, deploy versions of applications or services
  • User
    • Uses an application (may not be aware that a PaaS exists)

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Source:WSO2

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DevOps v.s. PaaS

DevOps – DIY automation:

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  • Use Chef, Puppet
  • You write the rules
  • You script deployment
  • No auto Scaling
  • You do FT/HA strategy
  • Tenant management and other tasks like security may be very manual still

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PaaS – its built in:

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  • Continuous deployment
  • Multiple clouds simultaneously
  • Auto-scales / Load Balances
  • Self-service Automation
  • Gives you a dashboard
  • May not work with your tools or processes

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Source:WSO2

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Migrate Application to Cloud

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  • SaaS
    • Multi-tenant : Pool Resource
    • Difficult to migrate
    • Re-engineering code => PaaS
  • SoSaaS (Same old Software,as a Service)
    • Multi-Instance
    • Difficult to scale
    • Easy to migrate

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IaaS & PaaS: Developer's Perspectives

  • IaaS normally provides up to O/S level as your choice; for example Amazon Web Services (AWS) offers several types of Operating Systems such as Windows Server, Linux SUSE, and Linux Red Hat. Developer need to install own middleware, database, etc.
  • PaaS, given that the database server, VM, and web server VM are readily provisioned

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Source:http://acloudyplace.com/2012/01/comparing-iaas-and-paas-a-developers-perspective/

Setting Up App in IaaS

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Setting Up App in PaaS

Source:http://acloudyplace.com/2012/01/comparing-iaas-and-paas-a-developers-perspective/

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PaaS: Types

  • Application PaaS – Force.com
  • Infrastructure Tied PaaS - Microsoft Azure
  • Development Environment Tied PaaS – Openshift, mPaaS, iPaaS, BPMaaS, …
  • Generic PaaS – CloudFoundry, Apache Stratos(WSO2 Private PaaS)
  • Ecosystem PaaS – Heroku, WSO2 App Factory, Force,IBM Bluemix,
  • DevOps PaaS – CloudFoundry, OpenShift, Stratos

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Red Hat OpenShift

Source:http://www.tomsitpro.com/

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Google App Engine

Source:http://www.tomsitpro.com/

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Heroku

Source:http://www.tomsitpro.com/

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Windows Azure

(now Microsoft Azure)

Source:http://www.tomsitpro.com/

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Amazon AWS

Source:http://www.tomsitpro.com/

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PaaS for Java

  • Amazon Elastic Beanstalk
  • CloudBees
  • Cloud Foundry
  • Google App Engine
  • Heroku for Java
  • Red Hat OpenShift
  • IBM Bluemix

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PaaS for Java: Comparison

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Source: http://www.infoq.com/articles/paas_comparison

PaaS for Java: Comparison

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www.facebook.com/imcinstitute

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Thank you

www.facebook.com/imcinstitute

www.slideshare.net/imcinstitute

www.thanachart.org

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