IaaS is a cloud computing service: a service provider delivers virtualized IT infrastructure over the internet. The customer only rents the required components without purchasing them. They can then access this virtual infrastructure via broadband networks. They are only billed for the actual usage of the services.
Infrastructure-as-a-Service (IaaS) offers flexible resources, as companies can quickly scale their infrastructure on demand, especially during peak loads. Furthermore, usage-based billing enables payment only for services actually used, eliminating high upfront investments. Since the cloud provider always delivers modern technology, users also benefit from secure and high-performance infrastructure. Additionally, virtualization optimizes resource utilization and reduces costs by enabling companies to share their resources efficiently.
Public IaaS Cloud:
This infrastructure shares resources among many users. Access is provided via the internet.
Private IaaS Cloud:
Companies operate their own isolated cloud. It offers high security standards and control.
Hybrid IaaS Cloud:
Combines public cloud and private cloud to unite scalability and security. Sensitive data remains protected.
Provider Responsibility:
The provider manages hardware, power supply, cooling, and infrastructure security.
Customer Responsibility:
The customer is responsible for operating systems, applications, data, and security aspects.
In the Infrastructure-as-a-Service cloud service model, responsibilities are distributed between the cloud provider and customer as shown:
Infrastructure-as-a-Service is suitable for applications with variable computing capacity requirements. Development projects or online shops, for example, benefit from flexible resources. Companies can respond quickly to changing requirements without having to install additional hardware. With stable usage, a dedicated infrastructure may be considered.
