The speed of software development depends on factors like development process complexity, quality of code, team size, productivity, and efficiency. Let's have a closer look at each one.

The complexity of the development process.: Every development team faces issues related to the technical aspects of the project, project requirements, tight deadlines, etc. All these challenges may slow down the process of software development.

Quality of code.: When the mess in your code increases, so does the time that it takes to maintain it. In the worst case, the code can no longer be maintained and the project will slowly die without continuous updating.

Team size.: The success of each project depends on the efficiency of internal communication. Researcher Katherine Klein from Wharton University states that the optional size for a team is five people. If there are more than seven people in the team, finding the common ground becomes more challenging.

Team productivity and efficiency.: In general, the performance of the team depends on the contribution of each member. If some team members are skilled and experienced, the team will work faster and smarter to get all of your tasks done.