As requested by the authors, for this product management book I focused on the "sacred seven" of the title (design, economics, psychology, marketing, human-computer interaction, data science, and law.)
I chose a heptagram - a seven pointed star, a sacred symbol from many ancient traditions - and I combined it with some icons rapresenting the different areas of expertise related to product management you explore in the book.
I wanted to make it as simple and as similat to the other books of the series and I did it throug the use of colour. The rainbow is also another link tho the "seven".