Raj Kumar advantages and disadvantages of IAAS
Explanation
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IaaS advantages
Organizations choose IaaS because it is often easier, faster and more cost-efficient to operate a workload without having to buy, manage and support the underlying infrastructure. With IaaS, a business can simply rent or lease that infrastructure from another business. IaaS is an effective cloud service model for workloads that are temporary, experimental or that change unexpectedly. For example, if a business is developing a new software product, it might be more cost-effective to host and test the application using an IaaS provider. Once the new software is tested and refined, the business can remove it from the IaaS environment for a more traditional, in-house deployment. Conversely, the business could commit that piece of software to a long-term IaaS deployment if the costs of a long-term commitment are less. In general, IaaS customers pay on a per-user basis, typically by the hour, week or month. Some IaaS providers also charge customers based on the amount of virtual machine space they use. This pay-as-you-go model eliminates the capital expense of deploying in-house hardware and software. When a business cannot use third-party providers, a private cloud built on premises can still offer the control and scalability of IaaS -- though the cost benefits no longer apply.
IaaS disadvantages
Despite its flexible, pay-as-you-go model, IaaS billing can be a problem for some businesses. Cloud billing is extremely granular, and it is broken out to reflect the precise usage of services. It is common for users to experience sticker shock -- or finding costs to be higher than expected -- when reviewing the bills for every resource and service involved in application deployment. Users should monitor their IaaS environments and bills closely to understand how IaaS is being used and to avoid being charged for unauthorized services. Insight is another common problem for IaaS users. Because IaaS providers own the infrastructure, the details of their infrastructure configuration and performance are rarely transparent to IaaS users. This lack of transparency can make systems management and monitoring more difficult for users. IaaS users are also concerned about service resilience. The workload's availability and performance are highly dependent on the provider. If an IaaS provider experiences network bottlenecks or any form of internal or external downtime, the users' workloads will be affected. In addition, because IaaS is a multi-tenant architecture, the noisy neighbor issue can negatively impact users' workloads.
Organizations choose IaaS because it is often easier, faster and more cost-efficient to operate a workload without having to buy, manage and support the underlying infrastructure. With IaaS, a business can simply rent or lease that infrastructure from another business. IaaS is an effective cloud service model for workloads that are temporary, experimental or that change unexpectedly. For example, if a business is developing a new software product, it might be more cost-effective to host and test the application using an IaaS provider. Once the new software is tested and refined, the business can remove it from the IaaS environment for a more traditional, in-house deployment. Conversely, the business could commit that piece of software to a long-term IaaS deployment if the costs of a long-term commitment are less. In general, IaaS customers pay on a per-user basis, typically by the hour, week or month. Some IaaS providers also charge customers based on the amount of virtual machine space they use. This pay-as-you-go model eliminates the capital expense of deploying in-house hardware and software. When a business cannot use third-party providers, a private cloud built on premises can still offer the control and scalability of IaaS -- though the cost benefits no longer apply.
IaaS disadvantages
Despite its flexible, pay-as-you-go model, IaaS billing can be a problem for some businesses. Cloud billing is extremely granular, and it is broken out to reflect the precise usage of services. It is common for users to experience sticker shock -- or finding costs to be higher than expected -- when reviewing the bills for every resource and service involved in application deployment. Users should monitor their IaaS environments and bills closely to understand how IaaS is being used and to avoid being charged for unauthorized services. Insight is another common problem for IaaS users. Because IaaS providers own the infrastructure, the details of their infrastructure configuration and performance are rarely transparent to IaaS users. This lack of transparency can make systems management and monitoring more difficult for users. IaaS users are also concerned about service resilience. The workload's availability and performance are highly dependent on the provider. If an IaaS provider experiences network bottlenecks or any form of internal or external downtime, the users' workloads will be affected. In addition, because IaaS is a multi-tenant architecture, the noisy neighbor issue can negatively impact users' workloads.
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Raj Kumar
Computer Science And Engineering
Raj Kumar