If this is the question coming up in your mind, you can either go for Agile or waterfall methodology.
When talking about the waterfall model, it is a systematic software development process where the project passes through various phases to reach the conclusion. Everything, from user interface to user stories and feature variations, is documented in advance. The methodology follows an old saying “measure twice, cut once”. In-depth investigation and thorough research of product features carried out upfront mitigates project risks. Additionally, with adequate research done in advance, estimates for time needed to complete each phase are more precise, delivering more predictable release date. However, waterfall model assumes that each requirement can be identified before beginning of any design or coding, which leaves the users with irrelevant product at times.
Conversely, Agile methodology proposes alternatives to conventional project management. This approach is usually used in project development to handle unpredictability. Unlike waterfall model, where the developers are left with only one chance to get everything right, Agile methodology enables continuous re-evaluation of every aspect, including requirements, design and more. With each re-assessment, there is a chance to take the project in a right direction. The “inspect and adapt” approach to product development cuts-down development expenses. Furthermore, the flexibility to develop the product simultaneously when the requirements are gathered empowers the team to ensure success.
If your product is expected to experience unpredictions while in the development phase, it is always viable to opt for Agile methodology. You get an opportunity to review the product every week or so and the feedback from your side can steer the development in right path. Above all, Agile methodology would maintain the market relevance of your product.