Cloud Computing Platforms and Services

Private clouds can deliver all three primary cloud service models: Infrastructure as a Service (IaaS) provides virtualized computing resources, Platform as a Service (PaaS) offers application development platforms, and Software as a Service (SaaS) delivers applications over the network. Private clouds simply refer to the deployment model (dedicated infrastructure) rather than limiting the service types offered.

Amazon EC2 (Elastic Compute Cloud) is the quintessential IaaS offering - it provides raw virtual machines that users can configure with any operating system, software, and networking setup. Unlike PaaS (which abstracts the platform) or SaaS (which delivers complete applications), EC2 gives customers control at the infrastructure layer while AWS manages the physical hardware.

Salesforce (CRM), Facebook (social network), Skype (communication), and Purewire (security services) are all delivered as complete applications accessed over the internet - the defining characteristic of SaaS. Unlike IaaS (raw infrastructure) or PaaS (development platforms), these provide ready-to-use software where users interact with the application itself rather than managing any underlying infrastructure or platform.

Microsoft's cloud portfolio spans all service models through Azure: IaaS (Azure Virtual Machines, bare metal infrastructure), PaaS (Azure App Service, Functions, SQL Database), and SaaS (Office 365, Dynamics 365, Teams). This comprehensive offering allows Microsoft to serve customers at every layer of the cloud stack, from basic infrastructure to complete business applications.

Business Intelligence applications serve multiple organizational tiers: Executives need strategic dashboards for high-level decision-making, Knowledge Workers (analysts, managers) require interactive analytics for deeper investigation, and Operational Workers benefit from reports and metrics that guide day-to-day activities. Different BI tools and interfaces cater to each user level, from executive scorecards to operational reporting.