Feature IaaSPaaS SaaS
Core Offering Virtualized computing resources Managed platform for development Fully functional software
Control Level Full control over infrastructure Control over applications, not infrastructure No control over infrastructure or software code
Ideal Users IT teams, system admins, and enterprisesDevelopers, software teams End-users, businesses
Use Cases Hosting applications, storage, and networking Application development, testing, and deployment CRM, HRM, finance, collaboration
Scalability High – can add/remove resources dynamicallyModerate – limited to platform constraints Limited – depends on vendor's plans
Maintenance Responsibility Managed by the business Partially managed by the provider Fully managed by the provider
Cost Structure Pay-as-you-go based on usage Subscription or usage-based Monthly/annual subscription