To create a complex website or web service with unique functionality, you can choose one of the following collaboration models:
Fixed Price: This model is ideal for smaller projects with a limited budget. A detailed and clear technical specification allows for an accurate calculation of the project cost, ensuring that the budget is not exceeded.
Post-Payment: This model is suitable for large-scale projects without strict financial and time constraints. The team coordinates each stage of the work with the client, makes adjustments, and implements the project. Payment is made after the completion of all work. Essentially, this is IT service outsourcing.