Software Development is not an easy task. It requires a lot of effort from the client-side as well as the developer side, only then anyone can get a sophisticated and bug-free website or application. In this IT world, the software has capabilities to turn the business into the next level and provide users a powerful, user-friendly environment. Thus, a proficient development team and an effective software development methodology proffer all verticals to fulfill the business demand without any loss in productivity.
In the early days, the Waterfall model was used to develop software, but later developers face problems during development. It includes the difficulty in handling the change in requests from customers’ in-between development process that leads to the high cost and time-taken process. Then, the Agile Software Development model had been proposed in the market to overcome the drawbacks of the Waterfall model.
A brief note on Agile Methodology & Model
Agile Methodology & model allows all users from all verticals and has capabilities to cater to the trying demands of the industry. It is a method that serves continuous iteration of development and testing during the software development life cycle. And, in this model, both development and testing activities are concurrent.
Agile testing takes all the disadvantages from previous models and gives a solution in the most simplified way. Agile testing follows the concept of the Iterative model, instead of having the testing after the development cycle, it checks the software at each phase or after each completed module. Therefore, it ensures minimum deployment time and bug-free software development.
How Agile differs from the Waterfall model
|Agile Model||Waterfall Model|
|Have an incremental and iterative approach for software development.||Development of software flows sequentially from start to end.|
|Agile can broke the development process into individual models.||The development process is not broken into individual models.|
|User can interact with or see the changes during the development process.||A user only sees the product at the end of the project.|
|You can fix error in the middle of the software development.||You can fix the error at the end of the software development.|
|Testers and developers work together.||Testers and developers work separately.|
|Documentation has less priority.||Documentation is a top priority.|
Agile Model refers to a group of development processes. It decomposes the user requirements into small fragments that play a significant part in software/ application development. The following are some Agile SDLC models that do share some primary characteristics but have specific differences as per need.
- Steps involve in agile SDLC models
- Requirement gathering
- Requirement Analysis
- Unit testing
- Acceptance testing
What features make the Agile model a replacement of previously used SDLC MODEL?
Establishes a close connection with the customer: Agile model builds a friendly connection with the customer throughout the software development process and shows a clear picture of requirements to the customer. And, if necessary, re-evaluates the requirements. It is recommended to take a small team size so that developers meaningfully engage in face-to-face communication.
Depend upon working software deployment: It follows the iterative approach for s/w development. Thus, it relies on working software deployment rather than comprehensive documentation.
Facilitates frequent Updation: It serves continuous iteration of development and testing during the software development life cycle. Thus, the Agile Model is capable of providing the frequent delivery of software and reduce the total development time of the whole project.
Smartly handles the change of demand: Due to the iterative working method, it handles change requests from the customer. Also, it efficiently incorporates development processes.
Uses Pair Programming concept: Agile development process usually deploys Pair Programming. It means, two developers, work with each other in one place but one handles coding and another review the code. This strategy will give compressed programs with very fewer errors.
- Developers are more attentive towards technical excellence and error-free design development.
- Developers learn and adapt to new things daily.
When to use an Agile Model
Agile Model is useful when new advancement is needed during the software development process. It yields little cost, and the work is finished within a few days or a few hours.
The agile model is useful when you have limited planning to get started with the project. It is because it offers dynamic changes in the middle of software development.
The agile model gives developers and customers’ freedom to think. It is possible in the Agile model to leave important decisions until more or better data or programs are available.
Agile Methodology & model has transformed the traditional way of software product development. Thus, developers and customers switch to significant changes from the Waterfall model. Agile Methodology can efficiently build a mobile app, application software, and other software solutions by quick evaluation of requirements. Hence, preferring the Agile Model and ditching the traditional testing ways is a big decision for developers, testers, and customers.