Infrastructure as a Service (IaaS)

Infrastructure as a Service | IaaS:-

IaaS is one of the layers of cloud computing platform where in the customer organization outsources its IT infrastructure such as servers, networking, processing, storage, virtual machines and other resources. Customers access these resources over internet i.e. cloud computing platform, on a pay-per-use model.

IaaS, earlier called Hardware as a Service (HaaS), is a cloud computing platform based model.

In traditional hosting services, IT infrastructure was rented out for a specific periods of time, with pre-determined hardware configuration. The client paid for the configuration and time, regardless of the actual use. With the help of IaaS cloud computing platform layer, clients can dynamically scale the configuration to meet changing requires, and are billed only for the services actually used.

Infrastructure as service

IaaS cloud computing platform layer eliminates the need for every organization to maintain the IT infrastructure.

IaaS is offered in three models: public, private, and hybrid cloud. Private cloud implies that the infrastructure resides at the customer-premise. In case of public cloud, it is located at the cloud computing platform vendor’s data center; and hybrid cloud is a combination of two with customer choosing the best of both worlds.

IaaS Examples: Amazon Web Services (AWS), Cisco Metapod, Microsoft Azure, Google Compute Engine (GCE), Joyent

IaaS provider provides the following services –

  1. Compute: Computing as a Service includes virtual central processing units and virtual main memory for the Vms that is provisioned to the end- users.
  2. Storage: IaaS provider provides back-end storage for storing files.
  3. Network: Network as a Service (NaaS) provides networking components such as routers, switches, and bridges for the Vms.
  4. Load balancers: It provides load balancing capability at the infrastructure layer.
Infrastructure as a Service

Advantages of IaaS cloud computing layer:-

1) You can dynamically choose a CPU, memory and storage configuration as per your needs.

2) You easily access the vast computing power available on IaaS cloud platform.

3) You can eliminate the need of investment in rarely used IT hardware.

4) IT infra will be handled by the IaaS cloud computing platform vendors.

Disadvantages of IaaS cloud computing layer:-

There is a risk of IaaS cloud computing platform vendor by gaining the access to the organizations data. But it can be avoided by opting for private cloud.

2) IaaS cloud computing platform model is dependent on internet availability.

3) It is also dependent on the availability of virtualization services.

4) IaaS cloud computing platform can limit the user privacy and customization options.’

Top IaaS Providers who are providing IaaS cloud computing platform

Infrastructure as a Service
IaaS VendorIaas SolutionDetails
Amazon Web ServicesElastic, Elastic Compute Cloud (EC2) MapReduce, Route 53, Virtual Private Cloud, etc.The cloud computing platform pioneer, Amazon offers auto scaling, cloud monitoring, and load balancing features as part of its portfolio.
Netmagic SolutionsNetmagic IaaS CloudNetmagic runs from data centers in Mumbai, Chennai, and Bangalore, and a virtual data center in the United States. Plans are underway to extend services to West Asia.
RackspaceCloud servers, cloud files, cloud sites, etc.The cloud computing platform vendor focuses primarily on enterprise-level hosting services.
Reliance CommunicationsReliance Internet Data CenterRIDC supports both traditional hosting and cloud services, with data centers in Mumbai, Bangalore, Hyderabad, and Chennai. The cloud services offered by RIDC include IaaS and SaaS.
Sify TechnologiesSify IaaSSify’s cloud computing platform is powered by HP’s converged infrastructure. The vendor offers all three types of cloud services: IaaS, PaaS, and SaaS.
Tata CommunicationsInstaComputeInstaCompute is Tata Communications’ IaaS offering. InstaCompute data centers are located in Hyderabad and Singapore, with operations in both countries.
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