What is Agile methodology Examples, when to use it, advantages and disadvantages. Agile software development methodology is an process for developing software like other software development methodologies Waterfall model, V Model, Iterative model etc. However, Agile methodology differs significantly from other methodologies. In English, Agile means ability to move quickly and easily and responding swiftly to change this is a key aspect of Agile software development as well. Topics covered. Brief overview of Agile Methodology. In traditional software development methodologies like Waterfall model, a project can take several months or years to complete and the customer may not get to see the end product until the completion of the project. At a high level, non Agile projects allocate extensive periods of time for Requirements gathering, design, development, testing and User Acceptance Testing, before finally deploying the project. In contrast to this, Agile projects have Sprints or iterations which are shorter in duration Sprintsiterations can vary from 2 weeks to 2 months during which pre determined features are developed and delivered. Planning Poker is an agile estimating technique which has become very popular in the last few years. It is based on an estimation technique known as. Agile software development describes a set of values and principles for software development under which requirements and solutions evolve through the collaborative. Scrum is one of the agile methodologies designed to guide teams in the iterative and incremental delivery of a product. Often referred to as an agile project. Agile Software Development Planning Poker Online' title='Agile Software Development Planning Poker Online' />Agile projects can have one or more iterations and deliver the complete product at the end of the final iteration. Example of Agile software development. Agile Development Cheat Sheet. Roles Scrum Master Schedules and leads the sprint meetings. Removes blockers. Keeps the team productive. Product Owner. A scrum master is the facilitator for an agile development team. Scrum is a methodology that allows a team to selforganize and make changes quickly, in accordance. Agile Project Management OpenSource and Free Software. This is an excerpt from Mike Cohns Agile Estimating and Planning online training course. For more information or to stream and download the fulllength. Example Google is working on project to come up with a competing product for MS Word, that provides all the features provided by MS Word and any other features requested by the marketing team. The final product needs to be ready in 1. Let us see how this project is executed in traditional and Agile methodologies. In traditional Waterfall model At a high level, the project teams would spend 1. System and Integration testing 2 months. At the end of this cycle, the project may also have 2 weeks of User Acceptance testing by marketing teams. Agile Software Development Planning Poker Game' title='Agile Software Development Planning Poker Game' />Agile Software Development Planning Poker AppIn this approach, the customer does not get to see the end product until the end of the project, when it becomes too late to make significant changes. The image below shows how these activities align with the project schedule in traditional software development. With Agile development methodology In the Agile methodology, each project is broken up into several Iterations. All Iterations should be of the same time duration between 2 to 8 weeks. At the end of each iteration, a working product should be delivered. In simple terms, in the Agile approach the project will be broken up into 1. Rather than spending 1. Agile software development, the team will decide the basic core features that are required in the product and decide which of these features can be developed in the first iteration. Any remaining features that cannot be delivered in the first iteration will be taken up in the next iteration or subsequent iterations, based on priority. At the end of the first iterations, the team will deliver a working software with the features that were finalized for that iteration. There will be 1. 0 iterations and at the end of each iteration the customer is delivered a working software that is incrementally enhanced and updated with the features that were shortlisted for that iteration. The iteration cycle of an Agile project is shown in the image below. This approach allows the customer to interact and work with functioning software at the end of each iteration and provide feedback on it. This approach allows teams to take up changes more easily and make course corrections if needed. In the Agile approach, software is developed and released incrementally in the iterations. An example of how software may evolve through iterations is shown in the image below. Agile methodology gives more importance to collaboration within the team, collaboration with the customer, responding to change and delivering working software. Agile development has become common place in IT industry. In a recent survey over 5. C Windows System32 Control Exercises. Agile development in one form or another. Agile Software Development Planning Poker On VideoIrrespective of your role in the organization, it has become essential to understand how Agile development works and how it differs from other forms of software development. In traditional approach each job function does its job and hands over to the next job function. The previous job functions have to signoff before it is handed over the next job function authenticating that the job is full and complete in all aspects. For example, Requirement gathering is completed and handed over to design phase and it is subsequently handed over to development and later to testing and rework. Each job function is a phase by itself. In Agile way of working, each feature is completed in terms of design, development, code, testing and rework, before the feature is called done. There are no separate phases and all the work is done in single phase only. Difference between Agile model and Non Agile models. Parameters. Agile Model. Non Agile Models. Approach of this methodology. This methodology is very flexible and adjustable and can adapt to the project needs. This methodology is not as flexible as Agile model and its tough to accommodate changes in the project. Measurement of Success. The success of the project in Agile model is measured by the Business value delivered. In this methodology the success of the project is measured by the Conformation to plan. Size of the Project. The Project size is usually small in Agile model. However larger projects can also be handled using the Scaled Agile Framework SAFe. The project size is Large in non Agile models. Style of Management. The style of management in Agile model is not centralized. It is distributed among the team members. The management style in the non Agile models is dictatorial. Only one person is the decision maker and rest of the people follows him. Ability to adapt to change. In Agile model the changes are accepted and adapted as per the project needs. But in non Agile models the changes are not accepted easily in the later stages of the development. Documentation required. Less documentation is required in Agile. More documentation is required in non Agile models. Importance of. In Agile model more emphasis is given to the people that means its People Oriented. In non Agile models the more importance is given to the process hence its Process Oreinted. Cycles or iterations. Agile methodology has many cycles or iterations which is also known as Sprints. But, in Non Agile methodology the cycles are limited. Planning in Advance. There is minimal upfront planning in Agile methodology. In Non Agile models the planning should be complete before the development starts. Revenue. In Agile method the return on investment is early in the project cycle. In non Agile methods the return on investment is at the end of the project. Size of the team. The size of the team in Agile methodology is usually small and creative. But in Non Agile models the team size is large. When to use Agile and Non Agile models. Project Attributes. Agile Model. Non Agile Model. Requirement of the Project. Requirements in Agile model can change as per the customer requirement. Sometimes requirements are not very clear. In Non Agile models the requirements are very clear before entering into the development phases. Any change in the requirement is not easily accepted during the development phases. Size of the Project. The Project size is small in Agile model hence small team is required. But in Non Agile models the Project size is usually big hence big team is required. Design of the Project.