pourquoi agile, faire simple

Besides, you just need that feedback from the implementation team. You need somebody to tell you, “Hey, if you simplify that requirement just a little bit, you can reduce the implementation time from three months to three weeks.” And in many cases, when you outsource, you already have your own in-house development team and/or a set of other outsourcing providers in place. They develop other products/solutions, implement common components to reuse, and define common style guides and UI elements. Using each other’s work and API also requires good communications. Things become even more interesting if you outsource the maintenance of software that you previously developed in-house. Most often, the knowledge about the architecture, behavior, and reasoning behind certain design decisions is at least partly in the heads of the development team, not on paper. That means the outsourcing provider’s team needs to pull that knowledge from real people to be successful.