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Question: Discuss about the Cloud Computing for Architecture and Key Technologies. Answer: Introduction: As it is operating from four different location on the globe, Soft-Arc Engineering Company is looking for a better networking solution. The main expectation of the company is that the service should be flexible enough to cater the requirements of the organization and at the same time there should not by any additional load on the resources of the company by the organization. Inorder to materialize these features the company is looking desperately for a feasible solution. An IT networking solution is all that the company is looking for. The main requirement of the organization is information sharing and data storage to access from all the operational nodal points. In this connection there is extensive evaluation performed to select a convenient service. In this connection different options are considered in the article and discussion is made to compare their relative advantages and disadvantages. Based on the observations and the inferences made recommendations are proposed for the co mpany for its specific requirements. The key requirements of the organization are data sharing across all the offices and data storage for future retrieval and sharing requirements sake. Automation of office work and online sharing options: Broadly speaking co-location and cloud computing services are two different options available for the company for the current requirements. It is possible that all the service requirements of the organization can be effectively met by any of the two options mentioned above. However each of the two are different in the characteristics of features and functionalities. For example co-location works on to share the resources used for the organizational networking requirements. The data storage and data sharing can be enabled using the dedicated co-location based infrastructural facilities. The major merit of the option is that the resource sharing can be done between two or even more organizations and there by the expenditure per head of each of the company will be reduced a lot. Secondly the maintenance and other overheads can also be shared between the users and thereby increase the performance at low cost. At the same time cloud service is an alternative with assured safety and better performance at higher capacities for data sharing and with flexibility to change the service parameters as and when needed (Alhazmi et al., 2012). Considering these cases, cloud service and co-location facilities can be equally availed by both the organizations, however it is more beneficial for the company if they go for cloud service as it is much safer and convenient. Company will be relieved of the problems of maintenance requirements and allocation of the manpower for resource management in this case. However organization can select a right cloud service based on specific alternatives available in the regions (Hashizume et al., 2013). When comparing the co-location and cloud service options for the company, the chief concerns that need to be considered are the cost or affordability, ease in operation, need for using the in-house resources like manpower, time factors, extendibility for future requirements, safety and security of the data in sharing. Apart from cost and the security aspects, cloud service is the leader. But considering the fact that the security related controls are already there in the standards and for a company like SoftArc price to afford the service is not a big task and hence it can go for the selection of Cloud service as an immediate option for its operational requirements. Further cloud offers unique advantage of minimum or zero down time, flexibility to optimize the usage volume as per the requirements (Hosting). Also there are options available to change the service as and when needed (jamsa, 2012). Considering all the above discussed points, it is advisable for the company to go for cloud service option (Ali et al., 2015). Once the cloud service option is used in the organizational set-up it can be used for the organizational performance requirements very conveniently. Also the service is reliable and right fit for the current conditions of performance as well with consideration towards future expansion possibilities of the organization. Enterprise data centers in the organization are compatible to provide networking of all the operational centers of the organization. However there is need for consideration to investment in the capital for infrastructure. Also there is need for managing the infrastructure from time to time with in-house manpower. If there is no right talent available for taking of any trouble shooting activities, it is a menace for the organizational functionality as Soft Arc cannot afford to lose its functionality for any purpose. At the same time even if there is availability of talent to take of the maintenance of EDC, it is really not a good option to invest the in-house capabilities on non-productive activities when there is another option available for service. Cloud service can be an alternative to EDC system in the organization. There are two options for the organization, firstly it can either select a cloud service for the organization from the public cloud or can take the same service from private operators. In any case, it is much needed for Soft-Arc to select more reliable and secured service. There are several metrics available to choose a right option. As well there are standards working out to assure compliance of the cloud service for security concerns. EDC is capital intensive option and requires close monitoring whereas cloud service needs only rental charges and end user is totally relieved from maintenance and operational monitoring and maintenance requirements. EDC needs further escalation of capacities from time to time. The service is more a cumbersome system to operate and requires close monitoring from time to time. Cloud service is cost effective and suggestable to SoftArc. It is specifically recommended considering the operational spectrum of the company. There is lot of scope for the service requirements to get expanded in future and hence selecting a cloud based IT service can be an intelligent option for the company. IaaS Vs PaaS Vs SaaS IaaS, PaaS and SaaS are different modes of taking up the services from the cloud network each of the three are meant for specific service requirement. IaaS is infrastructural service which can be used for data storage and sharing requirements. Cloud based services like Drop box can provide better options for data storage and sharing requirements. PaaS is platform as a service option this can be used for the sake of back end support for the software requirements. Here It is a lower level option and still will cater to the needs of the organizational requirements. SaaS is a software as a service option and this service will enable sharing of a range of software services for the organizational requirements. This is also available on cloud. Selection of a particular service purely depend on the organizational needs (Luo, 2011). Office operational sharing in the SoftArc can be done using SaaS as a service option. When SaaS like share point is selected, It can provide service of sharing the resources across all the operational centers and this in turn will provide real time information sharing capability to the organization. Also the service is useful, reliable and cost effective (kepes, 2011). There is equally possible for the organization to select either PaaS or IaaS for its operational requirements. IaaS can be employed for the data sharing requirements however PaaS cannot be used by the organization for all general purpose requirements. Firstly PaaS is not compatible and useful as a higher end tool, SaaS cannot be replaced by PaaS tools. But PaaS has its own benefits, it has its specific applications like supporting a range of applications. It may be possible that a particular application in the organization requires a specific platform as a service and that can be met by selecting the service for the or ganizational requirements. However SaaS is a software as a service option and there is need for the organizations to integrate the SaaS facility with an available platform in the organization. If the demands are routine existing platform services of the organization can be employed, however if new platform is needed for running SaaS, either it can be procured and installed afresh or alternatively it can also be shared online through cloud as a service(Bhardwaj et al., 2010). Possible Difficulties: SaaS is more likely to get outdated quickly. When the service is outdated it is required that there will be need to update the service features and characteristics. Also the system installations and devices using the service all need to be updated from time to time. Even though it is a difficulty, it should not be considered so, the service has capacity to ease further the operational flexibility with increased features from time to time (Doelitzsher et al., 2011). It is suggestable for the organization to select a right option that meets the requirements in most affordable and easy manner. Hence selecting SaaS like share point can be a right choice for the organization. This can enable real time data sharing across all its utility center sand users in the organization (Dillon, 2010). References: Luo, J. Z., Jin, J. H., Song, A. B., Dong, F. (2011). Cloud computing: architecture and key technologies.Journal of China Institute of Communications,32(7), 3-21. Bhardwaj, S., Jain, L., Jain, S. (2010). Cloud computing: A study of infrastructure as a service (IAAS).International Journal of engineering and information Technology,2(1), 60-63. Doelitzscher, F., Sulistio, A., Reich, C., Kuijs, H., Wolf, D. (2011). Private cloud for collaboration and e-Learning services: from IaaS to SaaS.Computing,91(1), 23-42. Dillon, T., Wu, C., Chang, E. (2010, April). Cloud computing: issues and challenges. InAdvanced Information Networking and Applications (AINA), 2010 24th IEEE International Conference on(pp. 27-33). Ieee. Kepes, B. (2011). Understanding the cloud computing stack: Saas, paas, Iaas.Diversity Limited, 1-17.