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Agile introduces the concept of fast delivery to customers using prototype approach.

Developers have to follow the coding guidelines defined by their organization and programming tools like compilers, interpreters, debuggers etc are used to generate the code. This tutorial also gives you infprmation insight into the pros and cons and the practical applications of the SDLC models discussed.


A typical Software Development life cycle consists of the following stages: This information is then used to plan the basic project approach and to conduct product feasibility study in the economical, operational, and technical areas.

The life cycle defines a methodology for improving the quality of software and the overall development process. The software development life cycle SDLC is a framework defining tasks performed at each step in the software development process.

The internal design of all the modules of the proposed architecture should be clearly defined with the minutest of the details in DDS. Following are the most important and popular SDLC models followed in the industry: A design approach clearly defines all the architectural modules of the product along with its communication and data flow representation with the external and third party modules if any.

The outcome of the technical feasibility study is to define the various technical approaches that can be followed to implement the project successfully with minimum risks. Don’t You Think this Awesome Post should be shared?? Sequential means that the next phase can start only after the completion of first phase. The information in this tutorial will help the project managers decide what SDLC model would be suitable for their project and it would also help the developers and testers understand basics of the development model being used for their project.


Agile is the most popular model used in the industry. Sometime product deployment happens in stages as per the organizations. These models are also referred as “Software Development Process Models”.

The programming code is generated as per DDS during this stage. Based on the requirements specified in SRS, usually more than one design approach for the product architecture is proposed and documented in a DDS – Design Document Specification. SDLC is the process consisting of a seccurity of planned activities to develop or alter the software products. After the product is released in the market, its maintenance is done for the existing customer base.

Requirement analysis is the most important and fundamental stage in SDLC. The product may first be released in a limited segment and tested in the real business environment UAT- User acceptance testing. It is performed by the senior members of the team with inputs from the customer, the sales department, market surveys and domain experts in the industry.

SRS is the reference for product architects to come out with the best architecture for the product to be developed. This is done through. This DDS is reviewed by all the important stakeholders and based on various parameters as risk assessment, product robustness, design modularitybudget and time constraintsthe best design approach is selected for the product.

Once the product is tested and ready to be deployed it is released formally in the appropriate market.

SDLC is a process followed for a software project, within a software organization. Then based on the feedback, the product may be released as it is or with suggested enhancements in the note market segment. Each process model follows a Series of steps unique to its type, in order to ensure success in process of software development.


It consists of a detailed plan describing ijformation to develop, maintain, replace and alter or enhance specific software. Software Requirement Specification document which consists of all the product requirements to be designed and developed during the project life cycle. Once the requirement analysis is done the next step is to clearly define and document the product requirements and get them approved from the customer or the market analysts.

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It aims to be the standard that defines all the tasks required for developing and maintaining software. Iterative and Spiral models are more accommodative in terms of change and are suitable for projects where the requirements are not so well defined, or the market requirements change quite frequently.

The following figure is a graphical representation of the various stages of a typical SDLC. It is also called as Informafion development process. Customer interaction is the backbone of Agile methodology, and open communication with minimum documentation are the typical features of Agile development environment. Planning for the quality assurance requirements and identification of the risks associated with the project is also done in the planning secuurity.

The programming language is chosen with respect to the type of software being developed. However this stage refers to the testing only stage of the product where products defects are reported, tracked, fixed and retested, until the product reaches the quality standards defined in the SRS.