Application development is the main sector of the software development industry. It is in fact application development that leads to industry-specific software solutions which cover nearly every type of industry in the world economy and which has made all companies and enterprises to computerize every part of their operations ranging from robotic production to intranet-based exclusive corporate communication. Needless to say, application development is a challenging task that requires the best brains of a software firm to plan, devise and develop an application that not only meets objectives and serves as a suitable solution but also triggers demand in industries for software solutions. The various pre requisites that must be defined before designing an application development model include understanding business processes, preparing an application feasibility study, describing the application architecture and describing the application roadmap. The first step is of course, business requirement analysis in which entails extracting the key needs of the user which the application needs to address. The requirements are understood by identifying the key users, the stakeholders and the operational frontlines of staff and receiving input from each of them on the nature of the business and the various data flows involved. After joint sessions, in which solution developers and customer-user groups participate, a consensus is arrived at as to the main requirements of the business and the same are documented according to standards. The next step is to conduct an application feasibility study in which the software experts, project managers and application developers report on the magnitude of the problem or the requirement needing solution, the estimated time, cost, resources and effort required for the solution and the prospects or payoffs involved in the bargain. Based on the report, the software development company offers to develop the application in part or fully for the user. The application architecture requires the development team to provide the management with information about the technologies needed for the development and how various technologies are going to be interlaced for the solution. The project manager, software analysts and the development team needs to be given an idea of how the solution is planned to be developed. The solution architecture involves the preparation of a draft outline of the software interface. Sometimes a solution needs to be developed at several levels and the solution architecture must illustrate how the levels are linked with each other and what controls and security features are provided with the application. The description of the application roadmap is concerned with how the application is going to be initiated with the business process and vice versa, how the various features of the solution are going to be connected to the user network, how the business is to be transited on to the software platform and what kind of ongoing support and user assistance are going to be provided. The solution roadmap is nothing but a framework of implementation of the application over a period of time and as a matter of business priority. All these aspects are pre requisites which, when taken into consideration, ensure that application development proceeds without hitches or hindrances.