Write a short description of several laaS, PaaS, and SaaS examples including their url, characteristics, capabilities and services they provide. In one case from each group, explain in more detail about the cloud services, architecture, virtual environment, usage, etc. laaS examples PaaS examples SaaS examples . Amazon Elastic * Google App Engine . Google Apps Salesforce.com Compute Windows Azure Platform Cloud (EC2) * RackSpace GoGrid . Eucalyptus Joyent . Terremark Force.com . RightScale . Heroku . Github * Gigaspaces AppScale . OpenStack Longlump Facebook Zoho Dropbox Taleo Microsoft Office 365 OpSource . Savvis Linkedin Slideshare Nimbula CareCloud . Enamolv