Infrastructure as-a-Service (IAAS)

Infrastructure as-a-Service (IAAS)

1. Definition

   • IaaS (Infrastructure as a Service) is a cloud computing model that provides virtualized computing resources over the Internet. Users can access and manage servers, storage, networks and other infrastructure components as needed, paying only for the resources they use.

2. Importance

   • IaaS is important because it allows organizations to scale their infrastructure resources flexibly and efficiently, without the need to invest in expensive physical hardware, while maintaining the agility to adapt to changing business demands.

3. Tools

   • Some of the leading IaaS tools and providers include Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), IBM Cloud and Oracle Cloud Infrastructure.

4. Examples

   • Amazon Elastic Compute Cloud (EC2) from AWS allows users to rent virtual servers on an as-needed basis. Google Compute Engine provides scalable, high-performance virtual machines on Google's global infrastructure. Microsoft Azure Virtual Machines offers a wide variety of virtual machine options and sizes for various use cases.

5. Key Principles

   • Elasticity: Infrastructure resources can scale up or down according to user demand. Pay-per-use: Users pay only for the resources they consume, allowing them to optimize costs. Automation: Automation of infrastructure management enables fast and efficient deployment of resources. Virtualization: Computing resources are provided as virtualized services, which increases flexibility and efficiency in the use of physical resources.