I am looking for a project management solution that helps me better keep track of a network of businesses and their transactions. I find the Trello KanBan solution very good for creating a sales funnel for onboarding businesses in stages where each business and the details/status of each business is encapsulated in a card.
However, we need a solution that allows us to "connect" each business we onboard with another business that is also in the sales funnel or already onboarded.
What's more, each business to business needs to be related to one or more businesses via a transaction. That is, there needs to be a relation between cards, and that relation needs specify a thing that is being transacted, a category of the thing, and how much that transaction would cost. All the while the cards need to be at different stages on the KanBan board (sales funnel).
Is there a project management solution that can integrate with Trello that can allow me to do this?