The main parameters of success are the goal of the project, a competent team and of course a quality product in which users are interested. Also reliable partners.
Its not enough for the team to develop a single product. A roadmap of the project should be drawn up at the highest level. And the team must strictly follow the listed points in the document. Then the project will wait for success.
Yes, the roadmap is important and if the team clearly adheres to the deadlines, then investor confidence in the project increases.