A presentation by Kelvin Gan Liam McMurray Web Services, University of Bath

1. A presentation by Kelvin Gan & Liam McMurrayWeb Services, University of Bath LiamLiam

2. LiamLiam

3. "What is Cloud Computing?" - Liam (2 weeks ago) LiamLiam

4. "The concept, quite simply, is that vast computing resources will reside somewhere out there in the ether (rather than in your computer room) and we'll connect to them and use them as needed." - Jonathan Weber (The Times Online) LiamLiam

5. 3 aspects of Cloud Computing As described by Thorsten vok Eiken at RightScale: � �Applications in the Cloud (SaaS): Google Apps Flickr � Platforms in the Cloud (PaaS): Google App Engine Mosso Force.com Infrastructure in the Cloud (HaaS) Amazon Web Services KelvKelv

6. Applications in the Cloud / SaaS email photo sharing calendars and contacts document sharing (like this!) LiamLiam

7. Amazon EC2 Elastic Cloud Computing� virtual servers for rent called�Amazon Machine Images (AMIs) based on Xen priced on per hour from $0.10 to $1 Amazon S3 Simple Storage Service up to $0.18 per GB storage� from $0.10 per GB transfer via REST SOAP BitTorrent Platforms in the Cloud / SaaS- Amazon Web Services� Kelv � This all used to be cheap until the � started falling against the $Kelv � This all used to be cheap until the � started falling against the $

8. Infrastructure in the Cloud / HaaS- Google App Engine A web application development framework and hosting solution rolled into one That uses the infrastructure available at Google so their servers + storage: BigTable Currently public preview Pricing to be announced Scalable? Quotas in place while in preview bandwidth is 10 GB which is plenty but CPU is 0.2 GHz max HTTP requests per day is 650,000 you can apply for an extension (currently) Python only KelvKelv

9. Microsoft Azure Services Very new: released Monday 27th October (last week!) XaaS Windows Azure (.Net hosting) MS SQL Services Live Services Microsoft Sharepoint Services Microsoft Dynamic CRM Services� Integrated support in Visual Studio Surprisingly, there are .Net SDKs for: �� Java Ruby! Kelv � vs S3, Google App Engine, SalesForce.com, Google Maps Live Services: Mesh Services - makes it possible to build applications that span across digital devices and the web and enables data synchronization across services, applications and devices. Devices Synchronization Application Management Identity Services Directory Services User-Data Storage Services Communications and Presence Services Search Services Geospatial ServicesKelv � vs S3, Google App Engine, SalesForce.com, Google Maps Live Services: Mesh Services - makes it possible to build applications that span across digital devices and the web and enables data synchronization across services, applications and devices. Devices Synchronization Application Management Identity Services Directory Services User-Data Storage Services Communications and Presence Services Search Services Geospatial Services

10. Good & Bad of PaaS/HaaS-basedCloud Computing The Good cheap scales minimal start up costs� for a few �'s I have big servers available resilience is someone else's problem The Bad vendor lock-in portability very hard single point of failure not yet mature Kelv & LiamKelv & Liam