Cloud computing is one of the most popular models of data sharing which enables convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction [1] [2] . Simply, Cloud Computing is a combination of different techniques and technologies that provide services through Internet [3] . Any web-based application or service offered via cloud computing is called cloud service. The most important objective of cloud computing is to provide secure, scalable and cost-effective on-demand computing infrastructures and services with high-quality [4] [5] . There are different types of services that are available in cloud computing, such as Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS) [6] . Software as a Service (SaaS) is the model in which an application is hosted as a service to customers who access it via the Internet. On the other hand, Enterprise resource planning (ERP) is a business process management software that typically integrates all facets of an operation, including product planning, Sales, Purchases, Items and Inventory, Manufacturing, Dimensions, Banking and General Ledger, in a single database, application and user interface. The cloud has been advancing gradually into the enterprise and the ERP systems have been evolved from traditional on-premise systems to the hosted systems and to cloud-based systems consequently. This change is more relevant to small-scale business that focuses more on saving direct cost, convenience of use and functionality of the system without the investment of time. Cloud-Based ERP is an efficient approach that uses cloud computing platforms and services to bring about a revolution in businesses.

Many researchers have conducted research on the cloud-based ERP system. We have studied many research papers on the topic from a variety of sources. We have focused some of them in this section. Naveen Chandra et al. [7] . They have identified and classified the benefits and drawbacks of traditional ERP system and tried to focus on different types of benefits and drawbacks of traditional ERP system compared with Cloud-Based ERP systems. R. Meganathan et al. explored on Reviews on Comparison of Cloud-Based ERP Infrastructures [8] , and critically investigated the issues and obstacles that refuse to accept ERP within the organization and proposed some advantages of Cloud-Based ERP particularly cost, maintenance, technical competence to influence the organizations to accept Cloud-Based ERP systems. Fengze Zhong et al. [9] , have proposed three types of scopes to evaluate the promises and challenges of cloud-based ERP systems. Primarily, they have identified a set of key promises and challenges to help IT decision makers and researcher to gain a better understanding of cloud computing and ERP. Secondly, they have identified promises and challenges of Efficiency, Flexibility, Ubiquity, and Security of cloud ERP. Finally, they proposed research opportunities for IS researchers in the domain of cloud-based ERP systems based on their identified four dimensions. Another some potential researchers Dr. Dhiraj Jain et al. [10] , have tried to discuss on drawbacks of traditional ERP systems like, system setup costing, maintenance cost, higher salary of skilled staffs, system updating cost and data management costing and they have shown benefits of adopting cloud ERP in their business operations through collecting data and surveying on employees of different IT organizations by providing statistical result. Vandit Hedau et al. [11] , have emphasized on some lacking of traditional ERP system on SMEs and compared the tradition ERP system with Cloud ERP for SMEs. From the above study, we have found some problems of traditional ERP and some benefits of Cloud ERP system. Finally, we have developed a model which is a found better than other developed models giving focus on SaaS model. This ERP system will be stored in the cloud system. Different types of users of the organizations will connect through the organization’s customized security system, which is one of the different techniques than other systems.

Cloud computing delivery services models can be divided into three archetypal models and different derivative combinations [12] . The “SPI Model” is a model which is the combination of three fundamental models where “SPI” refers to Software, Platform, Infrastructure (as a Service), respectively [13] . All the models are discussed below:

Enterprise Resource Planning (ERP) system is one of the most popular business management systems of all types of business management systems and has been dominating in the business organization for more than two decades [17] [18] . Generally, ERP systems automate and integrate all types of business management activities in a single system by providing benefits of real-time capabilities and flawless communication for business in the small and medium organizations so that organizations can achieve operational excellence, improve productivity and competitive advantages [19] . ERP software also economically benefits the business organizations [20] . It reduces the operational cost of an organization and economically benefits the ERP users. That’s why the use of ERP is increasing in the Small and Medium enterprises (SMEs) radically.

The use of technology in organizations is increasing rapidly day by day, because, the company’s main aim is to reach maximum prospective customers using latest techniques and technology so that the business organizations can achieve their targeted profits from the current competitive business. Presently, the organizations are adopting ERP software to enjoy the advantages to achieve their goals, such as: cost reduction, better customer service, improved productivity, better quality, enhanced resource management, better planning and decision making and organizational empowerment [21] . There is a query in the market that how cloud computing particularly Software as a Service (SaaS) model would replace and sweep the traditional on-premise software delivery model in future? [22] , Information Technology (IT) can help them achieve these goals, because the companies are continuously searching for ways to reduce costs and operate more efficiently in order to remain competitive in their markets [23] . Nowadays, the reality is that cloud computing is playing an increasingly vital role in business organizations because Cloud computing is the latest technology and the services of which can be very comfortably afforded by the SMEs since ERP can be hosted on Cloud and rented on pay-per-use basis, which does not need a great deal of initial capital to ensure business stability in a highly competitive market [24] . Besides these, some other factors also influence diverting traditional ERP to Cloud-Based ERP [25] , such as:

i) Flexible Payment

The payment policy of the Cloud Computing system is a pay-per-use basis. Here, the client has to pay actual uses charge rather than fixed license fees as charged by the traditional ERP vendors. Prices are very competitive. This is one of the major advantages of moving to the cloud.

ii) Maintenance cost

There is no maintenance cost as all kinds of maintenance activities are conducted by the cloud service provider.

iii) IT security

Security of IT equipment and software is a very concerning issue currently. Organizations have to invest a huge amount to provide security of IT devices and software but this type of cost can be reduced by the cloud environment.

iv) Data access availability (24 × 7)

The ERP software can be accessed by the authorized person by 24 × 7 from anywhere.

v) Platform independence

The ERP software can be accessed by the authorized person from any place using various types of OS. Figure 2 diagrammatically illustrates the benefits

of Cloud-based ERP system.

The Comparison between Cloud-Based ERP and On premises ERP has been shown in Table 1 based on their Infrastructural cost, implementation cost, license cost, maintenance cost, data security, scalability, customization capabilities and up-gradation cost [26] - [30] .

The below bar chart in Figure 3 shows the top reasons for implanting ERP in

many organizations [31] . The reasons are improving business performance, making employees’ jobs easier, ensuring reporting/regulatory compliance, making better integrated systems across locations, replacing old ERP system, keeping the company growth, ensuring better serve to the customers, standardizing business operations, reducing working capital, etc.

Among all, the “Improve business performance” is the topmost reason which is 17% out of 20%, The second highest one is “Make employee job easier” which is 14%, position the company growth and ensuring better serve customers are the 9% and 8% respectively. So, the chart presents that the organizations are using Cloud-Based ERP rapidly to achieve their goals and increase their business.

i) To present an overview of SaaS model for Cloud-Based ERP.

ii) To focus on medium and small-scale businesses for saving direct cost.

iii) To set-up the Account of different companies or branches simultaneously without any cost.

iv) To update disaster recovery—Cloud makes it easier to send application updates at a faster rate. In the case of system or server crashes, data stored over the cloud can be recovered

v) To manage Software and its associated data centrally (in the Internet “cloud”).

vi) To access the software from a remote location.

Figure 4 illustrates the model of Cloud-Based ERP system. The ERP system will be stored in a cloud computing system. Different types of users like HR, Finance, Sales, Logistics, Marketing, Accounts users of an organization can access into the ERP system from cloud environment using the laptop, desktop or mobile apps. The user is able to use the ERP system in an organization through the internet by passing through organization’s customized security system and the security system must be integrated with antivirus software, firewall and others as per organization’s policy or ability so that any unauthorized user or perilous user cannot access into the ERP. The admin user can control all types of users and can control, manage and setup the entire ERP system.

This paper explores the potentials of implementing this project in facilitating business activities smooth and cost-effective manner. The front page is the preface window of the system to notify the user to login with User Name and Password according to organization’s policy as like as Figure 7 .

After login into the system with registered user id and password, an user can access the dash board where they can start entering data. Besides these, the admin can login with providing admin user and password and access the admin panel

and has the privilege to setup and access the whole system like create user’s account, view, Transaction Reference, Taxes, Tax Group, System and General Ledger Setup, etc. as Figure 8 .

In the Transaction References Setup option, a company can give Bank Payment, Fund transfer, Sales order and Sales invoice, etc. After that, using Items Entry choice, a user can enter different types of items of an organization and this will be reflected in other related areas. Sales is another working area of the system. User can give entry of sold products and after giving entry it will automatically be updated into others related areas so that organization can manage everything automatically and smoothly within a short time.

Moreover, a comparative study of Cloud-Based Enterprise Resource Planning (ERP) for Small and Medium Enterprise against other systems is shown in Table 2 . In this comparison, we tried to compare different aspects of Cloud-Based Enterprise Resource Planning (ERP) each other’s and try to focus on why the developed system is better than other developed models.

The model “Clouds-based ERP” is a very easy and user-friendly unique system. Here, we have developed and implemented a cloud-based ERP system and shown how it can be useful to different customers. The ERP is provided with standard modules, like Sales, Purchases, Items and Inventory, Manufacturing, Dimensions, Banking and General Ledger and Setup. Its functionality is appropriate to small and medium companies for managing purchases, controlling their stock, issuing offers, registering orders and sending invoices. It also shows how we can manage and maintain cloud-based ERP from the cloud server and android application. We have tested the system using different testing techniques, and found very smooth and effective.