Cloud Computing - PaaS
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The document discusses the advantages of Platform as a Service (PaaS) over Software as a Service (SaaS) and Infrastructure as a Service (IaaS), highlighting its ability to reduce administration effort, increase scalability, and lower costs. It outlines the components, significance, and development process of PaaS, including its market overview with examples like Amazon Web Services and Google App Engine. The presentation concludes with a call to reduce overall costs and improve business focus through PaaS solutions.
Cloud Computing - PaaS
- 2. Cloud Platforms / PaaS Thomas Bachmann! info@thobach.de
- 3. Agenda Motivation! Definition! Significance! Platform Idea and Components! Market Overview! Conclusion! Disclaimer: The statements in this presentation are related to the Java programming language. 1
- 4. Motivation Image-Source: http://dilbert.com/strips/comic/2010-01-18/ reduce administration effort! increase flexibility! improve scalability! reduce development effort! increase availability! short time to market! reduce overall costs! focus on business applications reduce fix costs 2
- 5. Definition HuaaS in the middle of the Cloud Stack! SaaS divided into programming - applications and runtime environment! - Application services provides an application PaaS container for one or more - programming environment programming languages! - runtime environment divided into Application PaaS and Integration and IaaS Governance PaaS - infrastructure services (network / storage / compute) - Resources (virtual / physical) Hardware 3
- 6. PaaS vs. SaaS and IaaS Image-Source: http://www.microsoft.com/austria/enterprise/article.aspx?Id=IaaS+PaaS+und+SaaS no direct access to operating and file system! application server, load balancer and other middleware is already installed and accessible via APIs 4
- 7. Significance used by leading edge users & ISVs! in Japanese companies more common! currently not suitable for complex applications Image-Source: http://www.gartner.com/it/page.jsp?id=1447613 5
- 8. Platform Idea and Components Programming Model comparable to enterprise application development (cluster of application servers with load balancer)! asynchronous! stateless Image-Source: http://www.ibm.com/developerworks/websphere/library/techarticles/ 0606_petersonr/0606_petersonr.html Development Process provider selection (vendor lock-in)! multiple versions parallel usable (test, stage, live)! SDKs and IDE plugins provided! new development or migration 6 Image-Source: http://www.klinksoft.com/webdev.htm
- 9. Platform Idea and Components Runtime Environment based on existing runtime environments! can be shut down at any time by PaaS provider! partially limited (sandbox)! manages database access! e.g. Java Servlet Container Image-Source: http://download.oracle.com/docs/cd/E19933-01/819-2641/6n4trr8j8/index.html Persistence no direct disk access! hold data in DB, caches or RDS BLOB stores! access via provider dependent NoSQL API or runtime environment BLOB Image-Source: http://www.softicons.com/free-icons/system-icons/ colobrush-icons-by-eponas-deeway/database-icon 7
- 10. Platform Idea and Components Concurrency and Communication threads are not available everywhere! asynchronism via provider dependent APIs! usage of messaging infrastructure Image-Source: http://www.thefullwiki.org/Thread_pool_pattern Access Layer access via Internet via HTTP! make use of HTTP protocol attributes (cache, stateless) Image-Source: http://www.tcpipguide.com/free/t_HTTPOperationalModelandClientServerCommunication.htm 8
- 11. Platform Idea and Components Multi-Tenancy Image-Source: http://www.ibm.com/developerworks/webservices/library/ws-multitenantpart2/index.html multi-tenancy on several layers! PaaS providers support multi-tenancy partially through namespaces for DB and tasks 9
- 12. Market Overview Image-Sources: AWS Logo: http://www.pironet-ndh.com/business-cloud/?attachment_id=5045, GAE Logo: http://www.behindmind.com/de/programs/4674_portable-google-app- engine-sdk-for-python.html, Salesforce.com Logo: http://pro.clubic.com/entreprises/salesforce/actualite-423192-salesforce-bons-resultats-affiche-presque-100-000-clients.html? TB_iframe=true&height=650&width=850, Windows Azure Logo: http://www.microsoft.com/germany/presseservice/news/pressemappe.mspx?id=532350 10
- 13. Amazon Web Services: Elastic Beanstalk based on AWS IaaS services! direct access to EC2 instances possible! supports only JEE applications Image-Source: http://itsitspace.blogspot.com/2011/01/elastic-beanstalk-amazons-revolutionary.html 11
- 14. Google: App Engine runtime environment sandboxed! supports JEE, Python and Go applications Image-Source: http://thegrovegroup.wordpress.com/2009/04/27/the-google-apps-engine/ 12
- 15. Salesforce.com: VMforce VMware stack! runs in the salesforce data center! strong link to force.com services and database! supports Java applications! hard to port to other provider Image-Source: http://blog.springsource.com/2010/04/27/vmforce-spring-cloud/ 13
- 16. Microsoft: Windows Azure Image-Source: http://www.microsoft.com/china/ard/en/innoforum/innoforum_14.mspx large set on supported programming languages! 3 roles (Web Role, Worker Role, VM Role)! also useable as appliance 14
- 17. Conclusion, Questions & Discussion Image-Source: http://dilbert.com/strips/comic/2010-01-18/ reduce administration effort! increase flexibility! improve scalability! reduce development effort! increase availability! short time to market! reduce overall costs! focus on business applications reduce fix costs 15