Cloud Service Models

IaaS, SaaS, PaaS

The Three Fundamental Cloud Computing Models are:

  • Infrastructure as a Service (IaaS)
  • Platform as a Service (PaaS)
  • Software as a Service (SaaS)

Each model represents a different level of control, responsibility, and flexibility for organizations adopting modern technological solutions. Below is an explanation of each model, including examples, customer responsibilities, and key advantages:

Cloud Service Models

Infrastructure as a Service (IaaS)

This cloud service model provides virtualized IT infrastructure resources over the internet, including servers, storage, and networking. It’s ideal for organizations seeking flexibility without investing in physical hardware. Commonly used by infrastructure architects.

  • Examples: Microsoft Azure, Amazon EC2
  • Customer Responsibility: Operating system, applications, data, configurations
  • Advantages: Scalability, pay-as-you-go pricing, full control over the environment
Cloud Service Models

Platform as a Service (PaaS)

This model offers a complete environment for developing, running, and managing applications without worrying about the underlying infrastructure. It includes servers, storage, networking, operating systems, and middleware. Ideal for developers.

  • Examples: Azure App Services, AWS Elastic Beanstalk
  • Customer Responsibility: Application development and management only
  • Advantages: Accelerates development, reduces operational complexity

At Stronghold, we offer licensing for the leading cloud platforms in the market: Microsoft and AWS. In addition, we provide a comprehensive service that covers everything from initial consulting, implementation, and environment development to efficient resource estimation and ongoing platform management.

Frequently Asked Questions

This depends on the selected solution. Stronghold System Solutions Corporation will help you evaluate an appropriate plan that considers all relevant elements, including data locations, cloud provider, retention periods, encryption, backups, managed access, and any additional services required.

The choice depends on the level of control the organization requires, the capabilities of its IT team, and the type of solution it wants to implement. Stronghold System Solutions Corporation can assess your environment and recommend a combination of services tailored to your business needs.

It can reduce upfront investment in servers, storage, maintenance, and hardware refreshes. Stronghold System Solutions Corporation can help you accurately estimate the capacity you need, configure budgets and alerts, and review consumption so your architecture operates efficiently within the agreed budget.

No. Cloud adoption can be gradual and does not require all systems to be migrated at once. Some organizations keep certain servers or applications on their premises while moving other services to platforms such as Microsoft Azure. This hybrid approach allows infrastructure to be modernized according to your company's priorities, risks, and budget.

One of the main advantages of cloud services such as Microsoft Azure is the ability to adjust compute, storage, and other resources based on demand. This supports periods of higher activity, new projects, or business growth. Resources can also be reduced when they are no longer needed, avoiding unnecessary costs.

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