User talk:Alsa3di17

Infrastructure as a Service (IaaS)
Understanding Infrastructures as a Service (IaaS)

Infrastructure as a Service is a form of hosting. It includes network access, routing services and storage. The IaaS provider will generally provide the hardware and administrative services needed to store applications and a platform for running applications. Scaling of bandwidth, memory and storage are generally included, and vendors compete on the performance and pricing offered on their dynamic services. The service provider owns the equipment and is responsible for housing, running and maintaining it. IaaS can be purchased with either a contract or on a pay-as-you-go basis. However, most buyers consider the key benefit of IaaS to be the flexibility of the pricing, since you should only need to pay for the resources that your application delivery requires.

Characteristics and components of IaaS include:
 *  Utility computing service and billing model.
 *  Automation of administrative tasks.
 *  Dynamic scaling.
 *  Desktop virtualization.
 *  Policy-based services.
 *  Internet connectivity.

'''IaaS provider and Consumer ''' The key roles in a cloud environment include the service consumer and the service provider. The cloud service consumer needs a secure anytime anywhere access to low cost services that are flexible and easy to use. The biggest hurdle to adoption of cloud has to do with consumers discomfort in the following areas: security of service and the underlying data, service availability and reliability, service management to ensure service level agreements, ensuring control over access and policies, and the appropriate administration to facilitate flexible pricing structures. The service provider actually runs the service that the service consumer wants and was designed and developed by the service creator. The cloud services creator needs tools and capabilities to offer differentiated services, offer incentives to ensure that consumers keep coming back to use the services, and the ability to change services on-demand to stay competitive and address threats. The service provider needs their IT resources integrated so their usage is optimized, the ability to add/remove resources on demand, a non-disruptive way to save money, and the means to charge for usage.

'''Consumer’s view on IaaS '''
 *  Enable users to access applications from anywhere
 *  A modular system, which is flexible, scalable, virtualized and automated.
 *  Resilient and always available.
 *  Enable to put applications and data on platform provisioning & maintenance by provider.
 *  Own the hardware & nuances about provisioning & maintaining the OS & hygiene facts like space and power etc.

Provider’s view on IaaS


 *  Provide virtual infrastructure (server, storage and Network virtualization).
 *  Responsible for provisioning of space, power & cooling.
 *  Deploy web based applications to easily provision infrastructure for customer on demand.
 *  Responsible to provide load balancing services.
 *  Eases the process of cloning apps on additional infrastructure instances.
 *  Service level agreements with customers on “availability of infrastructure services”
 *  In a dense, shared, and pooled environment, the security of CPUs, data, and network is paramount.
 *  Account Management & Provisioning.