The iterative approach (or Agile Scrum) involves selecting the prioritized functionality together, developing it over a period of 2-3 weeks (iteration), and conducting a demo for you. Unlike the linear development model, where the entire product is delivered to the client after its completion, you can see the results of the work every few weeks. The development team can respond to your feedback and requirements “on the go” rather than when it’s “too late.” Additionally, after several iterations, your business can start using the core functionality while additional modules are developed in subsequent iterations.