Iaas- infrastructure as a service

Introduction

Cloud computing is concept in which computing resources is offered as a service over a connections, usually over internet network. In this scenario computing is performed on sharing a pool of virtual or physical resources. Cloud computing is broadly divided into three main service categories:

·         Iaas

·         Paas

·         Saas

Iaas- infrastructure as a service

Cloud infrastructure service is one of the basic service model of cloud computing. As like other models this service provides access in a virtual environment. It makes use of a public connection, say the internet. From various servers and networks, pool of hardware is drawn to give the connection, all these are maintained by the cloud providers. Access is given to these virtual hardware components to build their IT platforms. Iaas provide an instance of the virtual server and storage, as well as APIs which allows the users to migrate the work to virtual machine. Clients of Iaas have allotted with storage and given the access to configure the storage and virtual machine as desired. As per workloads, Iaas provides offer various capacity instances.

Enterprise customers make use of cloud infrastructure service to develop scalable and cost effective solutions. These solutions are outsourced to the cloud service providers so that the expenses and complexities are managed feasibly. When the business clients need to upgrade or scale up their operations, they might require more hardware in that case they no need to purchase it, just tap the cloud resources as when needed.

Cloud infrastructure service frequently offers extra resources such as raw block storage, file storage, firewalls, virtual machine disk image library, object storage, IP addresses, software bundles, load balancers, virtual local area networks. Cloud infrastructure service providers supply these additional resources in large pool on demand. The service providers bill the Iaas services based on the utility of computing and consumption of allocated resources.

Features and benefits of Iaas

The following are the features and benefits of Iaas:

·         Scalability, as and when the client needs the resources are available on demand with no delays.

·         Client gets the hardware with no investment

·         The service is billed only for the actual use of the allocated resource

·         Client can access the cloud service from any location with the help of internet, as the cloud security protocol allows it

·         Iaas will run inspite of any failures of servers, as there are multitude of redundancy resources and redundant support.

·         Physical security is provided to the physical resources which are installed in data centers.