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Majority of organizations migrate to cloud because it is very easy to deploy, cost efficient and readily available throughout an entity. It may result in cloud environments being applied with low involvement or minimal control by entity's IT department and thus may

Organizations use the Cloud in a variety of different service models (SaaS, PaaS, IaaS) and deployment models (Private, Public, Hybrid). There are a number of security issues/concerns associated with cloud computing but these issues fall into two broad categories: Security issues faced by cloud providers (organizations providing software-, platform-, or infrastructure-as-a-service via the cloud) and security issues faced by their customers.In most cases, the provider must ensure that their infrastructure is secure and that their clients’ data and applications are protected while the customer must ensure that the provider has taken the proper security measures to protect their information.

Cloud computing has set a trend in the information technology arena that has sparked the interest of all who utilize the internet on purpose and unsuspectingly. Initially, the primary purpose of cloud computing was to provide a centralized data bank that organizations could use for quick data access. Its use has been quickly adapted, however, beyond business use to become the first option for personal use. The advantages and disadvantages of implementing such a shift from business to personal are varied, yet, statistically, according to the CISCO Global Cloud Index: Forecast and Methodology, 2014-2019 White Paper, its public use is on the rise. The report notes that “by 2019, 56 percent of the cloud workloads will be in public cloud data centers, up from 30 percent in 2014 and by 2019, 44 percent of the cloud workloads will be in private cloud data centers, down from 70 percent in 2014”. Though disadvantages with regard to data security is prominent, users have deemed that its implementation will still promote greater benefits than loss.

When user has to use more than one infrastructure user need to pay more money for each cloud to use the facilities which makes the application expensive. [3]

We would like to provide the benefits of cloud computing without any troubles to propel in the direction it is designed for. This is to be achieved by preventing the owner's data from all risks associated and providing a cloud model that is more secure and efficient. The proposed model shall overcome the security risks defined by the security functions over cloud computing, as follows in (Passent M. et al., 2015):

To find a “best of both worlds” solution, now we have the Hybrid Cloud, which combines the advantages of both Public Cloud and Private Cloud, keeps the wide range of users and also protects users’ secret information.

Cloud Services and Virtualization continue to grow in popularity but are they right for your business? These technologies can reduce overhead operation costs, improve utilization of resources and provide a level of flexibility to the organization’s Information Technology (IT) system. Understanding that these technologies do and their pros and cons is the foundation of choosing the right features for your business. Cloud services offer three types of services; Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS) to meet the software, infrastructure needs of a business and provides them on a lease type of payment plan. Virtualization has three types of server virtualization, Full virtualization, Para-Virtualization and OS level Virtualization. Similar to Cloud services Virtualization types have features which may suit one business over another. Comparing the features provided by these technologies to total ownership of the IT system is also crucial in selecting the best services for your company as there can be an array of combinations of services contracted and internally owned features. While the perks of these technologies can be beneficial for an organization they should be carefully researched and tailored to the business strategic goals for

Lastly is the security issue that can be achieved while using the hybrid cloud. Hybrid cloud model offers the on-premises, what we can refer to as a private infrastructure that is only directly accessible by BPI. This will reduce the random access latency and time. Since there is an increased risk of

While Cloud administrations offers adaptability, versatility and economies of scale, there have been equivalent worries about security. As more information moves from midway found server capacity to the Cloud, the potential for individual and private information to be traded off will increase. Accessibility and trustworthiness of information are in danger if suitable measures are not put set up preceding selecting a Cloud seller or executing your own cloud and moving to Cloud administrations. Cloud administrations, for example, Software as an administration, Platform as an administration or Infrastructure as an administration, will have their own security worries that need to be tended to. The cloud organizations or the vendors conduct a survey on the issues related to the Cloud security. This paper audits the best practices to secure the cloud administrations and information, the threats associated with the cloud technologies and counting traditional security methods and working with sellers to guarantee legitimate Administration Level Agreements exist.

The public cloud is a deployment model where cloud services are provided over a public network, such as the internet, by a third-party provider. Examples of public cloud services include Dropbox, Gmail and Twitter. By definition, most SaaS applications operate under the public cloud deployment model. One of the primary advantages of public cloud is its attractive pricing model. The organisation is typically charged a subscription fee for access to the cloud services, paying only for the number of users required, this removes the need for business to manage software licences (Savvas [Online], 2014). However, security conscious organisations requiring a SaaS solution may opt for a private cloud segregated from public networks. There are obvious security concerns involved in exposing a SaaS application to a public network. However, there are concrete steps an organisation can take to reduce the risk incurred with public cloud deployments. Many public cloud SaaS providers offer two-factor authentication, requiring an additional level of verification before the user’s credentials are accepted. This is typically achieved using an authentication code in the form of a text message sent to the user’s registered mobile number. Furthermore, organisations should develop and maintain a culture of cyber security, enforce best practices such as creating strong passwords and training staff in phishing awareness.

Cloud computing has advanced as of late. The new universe of the hybrid cloud is a situation that utilizes both private and public cloud administrations. Organizations understand that they require a wide range of sorts of cloud benefits with a specific end goal to meet an assortment of client needs.

With the creation of cloud computing it has made private businesses able to implement fast adaptations and changes to the computing environment that they are using. However, in the larger public sector, issues of security tend to hold back these companies not allowing them to adopt

The cloud service and infrastructure is provisioned for public. It may be owned, managed, and operated by a business, academic, or government organization, or some combination of them. Public Cloud is more like a true host that provides services and infrastructures to various customers. Customers have no controls or privilege over the locations of the infrastructures. The vulnerable part of this model is privacy and security since data and processing environment are not under management and control of the providers. Also some issues may occur such as network overwhelming, power outages, and hacker attacks, so running service in Public Cloud model is not 100% secured and perfect. That is why we will discuss next one. Examples of Public Cloud: Microsoft Windows Azure, IBM Smart Cloud.

A public cloud is a freely available cloud environment possessed by a third-party cloud provider. The IT resources on public clouds are generally offered to cloud buyers at an expense or by means of different avenues, (for example, a promotion). The cloud supplier is in charge of the creation and continuous support of people in public cloud and the IT assets.

In today’s age and time more services are moving to the cloud. A lot of people do not know what the cloud is, as the main variations are the public cloud, public/private cloud and the private cloud. The pubic cloud security is what we are going to be focusing on but there will be references to the private cloud. A quick definition of the public cloud is basically like an apartment or condo where multiple tenants share a huge building but have there on private spaces inside that building. An example of the public cloud for business is Amazon Web Services (4), Microsoft Azure (3), Office 365 (5), Google Cloud Hosting (6), and Box.com (7). A private cloud on the other hand is something you host internal inside your company to do similar services that is a private cloud. If you have remote log in like an SSLVPN connection you technically have a private cloud even with a file server or you could make it a little more user friendly and bypass the SSLVPN with something like Owncloud (8), which is similar to a private Dropbox (9) or Box.com (7).