IaaS, PaaS, SaaS
Three cloud service models: Infrastructure (IaaS), Platform (PaaS), and Software (SaaS) as a Service, each with different management levels.
What Is IaaS, PaaS, SaaS?
Cloud services are delivered in three models. Infrastructure as a Service (IaaS) provides virtual servers, storage, and networking—you manage the operating system and applications (e.g., AWS EC2, Azure VMs). Platform as a Service (PaaS) adds managed runtime environments so you only manage your application code (e.g., Heroku, Azure App Service)
Software as a Service (SaaS) delivers complete applications over the internet (e.g., Microsoft 365, Salesforce). Most businesses use a mix of all three models.
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Explore Cloud DeploymentRelated Terms
Cloud Computing
CloudDelivering computing services like servers, storage, databases, and software over the internet instead of local hardware.
Amazon Web Services (AWS)
CloudThe world's largest cloud computing platform offering over 200 services including compute, storage, AI, and databases.
Microsoft Azure
CloudMicrosoft's cloud computing platform offering services for building, deploying, and managing applications with Canadian data centers.
Serverless Computing
CloudA cloud execution model where the provider manages the servers and you only pay for the compute time your code actually uses.