A comprehensive token taxonomy was presented in the previous chapter, with each proposed type exemplified by concrete crypto-tokens already trading in the crypto markets. What should be apparent from that exposé is that, irrespective of their type, tokens are inseparable from the business use case(s) of their generating ecosystem. They are issued (“minted”) only on a particular blockchain, serving the economic purposes of a particular ecosystem, through processes defined and controlled by the latter’s governance. Once used in transactions, they can have economic effects both on and off the blockchain. It is thus important to have an understanding of the end-to-end design parameters behind any particular token. Both opportunities and risks must be placed in a proper context. The current chapter will explain why this design context needs to be that of the entire blockchain-based ecosystem in which the token is issued and used.