This report evaluates several cloud-based organizations—Apple iCloud, Amazon Web Services, Google Docs, Windows Azure, and Salesforce.com—to determine the best option for a company transitioning to a cloud-based corporate email and calendar application. The evaluation covers each organization's primary cloud function, advantages over competitors, cloud computing service model (SaaS, PaaS, IaaS), cloud deployment model, and security features. The report highlights the cost-effectiveness, flexibility, and security standards offered by each provider, ultimately concluding that AWS Services would be the most beneficial for the organization due to its unique cost proposition and opportunities for innovation. Desklib provides students access to a wide range of solved assignments and study resources.