Speak to almost any company that has been around for a while about its enterprise architecture, and the words 'legacy systems' are bound to come up in short order. Maintaining and integrating legacy systems into new, digitised business models is a headache that is almost universal.

It is, however, the one thing that companies starting up do not have to worry about too much. What these companies sacrifice in institutional memory, they often more than make up in avoiding having to manage the complexities of old systems and processes.