IaaS (Infrastructure as a Service) is a type of cloud service that provides IT infrastructure over the internet. IaaS is primarily the basis for corporate services, such as those that provide SaaS.

Characteristics of IaaS

Free environment construction: You can freely choose and install the OS and applications.
Cost-effectiveness: Pay-as-you-go is common, and you only pay for what you use.
Scalability: Resources can be easily expanded or contracted as needed.

Merits

Flexibility: Free customization allows you to build a system that meets your specific needs.
Cost reduction: No initial investment is required, and operational costs are kept low.
BCP measures: Data centers are safely managed even in the event of a disaster, making it easy to continue business.

Demerits

Requires specialized knowledge: Specialized knowledge is required to build and operate the system.
Operational burden: Infrastructure management and maintenance can be time-consuming.

Representative services

1.  Amazon Web Services (AWS): A cloud service that is widely used around the world, boasting a wide range of features and high reliability
2. Microsoft Azure: A cloud service provided by Microsoft that is highly compatible with Windows and offers a wide range of solutions for businesses.
3. Google Cloud Platform (GCP): A cloud service provided by Google that excels in data analysis and machine learning.
4. IBM Cloud: A cloud service provided by IBM that excels in security and compliance, especially for businesses.
5. Alibaba Cloud: A cloud service provided by Alibaba that is widely used in Asia, particularly China.

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