If you are a startup founder, business owner, and your goal is to develop your application or website, the main task is to select a contractor. The vast majority of programmers work based on two approaches: outstaffing and outsourcing.
The difference between the two methods is not apparent, but the main one is the degree of customer participation in the project. In one case, the customer is involved in the process all the time, in the other case, it sets exact requirements to the end product, based on which the developers create the application.
You can learn more in the article about the difference between outstaffing and outsourcing by the link. It is written by a company that has successfully stopped both approaches and will dispel your doubts.