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Home Assignment Answers A STEP TO IAAS CLOUD

Organizations have evolved significantly by adopting Infrastructure as a Service (IaaS) central to their business operations. IaaS solutions have minimisedorganisational capex by renting the infrastructural requirements. These requirements such as hardware, storage, servers and software are outsourced to the third-party vendors. The National Institute of Standards and Technology (NIST) defines IaaS as capabilities that provision network, storage and other similar computing resources that allow organisations to run software applications and operating systems. Organizations are relieved of the burden of maintaining and managing the IT infrastructure that is outsourced. The key benefits of moving in-house infrastructure to the cloud environment are realised regarding burst ability and economic stability. It is also beneficial regarding Business Continuity (BC) and Disaster Recovery (DR). The move benefits organisations by reducing operating costs and by improving manageability.However, organisations must be aware of related challenges to migration and choose the best IaaS provider that aligns their services as per business requirements. This choice is based on various considerations as discussed below.

Difference between IaaS Cloud and In-House Infrastructure

There is a significant difference among the traditional computing infrastructure that hosts servers, networks and computing resources in-house and the cloud platforms.IaaS provides all the in-house infrastructure services via Virtual Machines (VMs). Fundamental differences between these two delivery models must be understood by organisations for deciding on which is most suitable for their organisation. They are discussed below.


In-House Infrastructure

IaaS Infrastructure

Cost Structures

They are fixed in traditional infrastructures as currents needs are evaluated at the time of purchase. Investments may also be for those resources that may not be used during business functioning.

Costs are adjusted as per the requirements and situations. Cost structures are more flexible that allows adjustments to be made over time.

Acquisition and Installation

This is a difficult and tiring process that is not feasible for dynamics in business operations.This impacts the availability of existing resources.

This process can be instantaneous as it takes only minutes to install a VM.This is ideal for businesses that require flexible structures. This is also feasible in the case when temporary storage is required.

Security Type

Security is the responsibility of internal generalist. High-level security expertise cannot be expected.

Security experts from provider’s side handle security. Thus, high-level security can be expected from such experts.

System Management

System management is carried out piecework basis whereby system parts are bought and installed. This is a complicated process that further raises management concerns.

The provider handles infrastructure management, and all the services are regulated accordingly with minimum dissatisfaction.


Above differences among these delivery models justify the benefits of Cloud services over traditional infrastructure models. Moreover, IaaS adoption has minimum impact on existing applications. However, regardless of whether the delivery model is IaaS or traditional, security must not be overlooked since both are highly vulnerable to different types of security attacks.

Critical Points to Consider for Migration

When opting for best IaaS provider and services, organisations must consider numerous points before signing Service Level Agreements (SLAs). These are

  • Security: This is the most important consideration to be made for cloud services. Client organisations must mention their security expectations from cloud vendors. This specification must align with personal information and critical data stored in the data repositories that will be migrated to cloud platforms so that this data is not subjected to any sorts of complications.
  • Availability and Performance: Organizations must also mention their expectations regarding the resource availability and performance in their SLAs. Some services can be critical ones that need maximum availability and least downtime for their access. These reliability issues must be considered at the time of migration.
  • Data Retention and Ownership: Organizations are required to control sharing of data across their business units. They need to ensure that all employees can easily access their business data. Update policies must define what data can be access and altered. Data must be secured from unauthorised entities lingering in the cloud environment.
  • Enhancements in Policy Structure: Service roadmaps must be defined. The existing policy structure must validate the upgrading of products and features along with access procedures. Bug fixes must be allowed by a cloud system in the incremental enhancements where new user desired features are rolled out.This is done with minimum disruptions and downtime in daily operations.
  • Support: There should be desired flexibility in the support system in case any issue arises in the cloud services. This support can be in the form of excellent manuals, live chats and help pages.
  • Integrations: Integration of development and testing environment, tools and framework must be done with integration APIs. Vendor lock-ins, time inefficient customisation and expensive maintenance costs must be avoided by adopting open technologies and standards.Accordingly, cloud solutions must be purchased that adopt open standards and APIs for connecting with internal infrastructure.This will result in simple and cost-effective integrations.
  • Usability: The cloud environment purchased by organisations must be easy to use, intuitive and straightforward for use in daily organisationalTo ensure the usability of required features, organisations must first demand live demonstrations for their product or services.
  • Scalability: Cloud allows effective scalability via the pool of resources provided online. A cloud environment can be scaled for supporting 30 devices to hundreds of them. This up-scale can easily be handled via cloud services.
  • Contractual Flexibility: Precautions regarding vendor lock-in must be taken in advance rather than suffering later on.There should be flexibility in existing options. Organizations must be allowed to opt and opt out of specific subscriptions if they don’t find them suitable. There should be no obligations as per the contractual agreements. Organizations must be allowed to switch between different plans and subscriptions.

These considerations are necessary and must be adopted by organisations before receiving any cloud services. This will assist them in selecting the most appropriate delivery model for their business with minimum impact and disruptions to the existing scenario.

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