General Challenges 
•Make use of all the knowledge in (cross functional) and outside the company (e.g. suppliers, research, competitors)
•Make sure that everyone understand their role and importance in how development is done
•Perform activities to mitigate risks (Finance, Quality, Functionality, Requirement and Components)
Can be done in different ways:
•Waterfall development (usually performed in Projects)
•Iterative development (usually performed in Projects)
•Diversified Development (performed in daily work) The trend in the industry seems to go this way and it is used by SPACEX and Tesla
In this document I will describe on a high level how theese three are performed