How long will it take to develop my project?
Fulfillment of the project on time is a key factor in a successfully completed project, as poorly planned project leads to cost overruns and financial losses on the client side. It is necessary to establish the boundaries of project development with the help of the following methodologies:
Waterfall and Agile (Scrum)
Project development methodologies significantly affect project implementation timelines.
This method implies a strictly consistent implementation on each stage of the project. The transition from stage to stage is possible only after the successful completion of the previous stage. There are no requirement changes while project development.
These sequence constraints allow you to build a transparent development process.
The team works in short cycles called sprints. Sprint lengths are usually between two and four weeks. At the end of each sprint, the team shows a new working version of the product.
Sprint structure consists of:
Sprint planning, implementation of new functions, testing, release of a new version of the product.
The formula for determining the duration of project development is the same for both methodologies, but it is used in different ways. For the waterfall methodology, the formula is applied for all stages at once, and for the Scrum methodology for each sprint separately.
Duration of work = (volume of work) / (productivity)
The scope of work is determined after the preparation of technical specifications or aggregation of requirements. The project is divided into UserStory (functions), and functions are divided into smaller tasks. The team that is involved in the development of the project, becomes responsible for the evaluation of the tasks.
Efficiency. People’s productivity can vary and depends on a large number of factors.
The waterfall development method is used in large and average projects, when several programmers are working on a project at once, in government projects or in projects where the requirements and boundaries are transparent and precisely known at the beginning of the project life time.
Scrum should be used when it is necessary to release the finished product quickly and update it, focusing on user reviews. It is usually applied in startup or dynamically developing projects.
Methodologies overlap in terms of means and are partially alike.
- Software implementation. The embodiment of a full-fledged project.
- Product testing. Test operation of the product.
- System integration. Product introduction (installation and commissioning).
There are 4 stages in each sprint:
- Planning. The team checks the tasks and selects the highest priorities.
- Performance. Specialists work altogether: while the programmer creates the code, the tester writes tests, and the technical writer writes documentation.
- Release.The team presents the results of its work.
- Retrospective. The team discusses sprint and problems encountered. All together they think how to improve the work and do more in the next sprint.
The work with Scrum is done with a lower price and with the portioned issue of ready-made product updates. The waterfall methodology implies a fixed large payment for the final version of the project, usually without demonstration of intermediate results.
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