David Tudehope quit working for CBA at 25 to start a company with big ambitions. Macquarie Telecom would take on Telstra. It’s been so successful he’s found his way onto the Financial Review Rich List. Tudehope shares his secrets for success, which includes something they’ve developed called the Noah’s Ark.

Background reading:

• The key to the group’s 28-year-success in the fast-changing tech industry is an in-house process they invented to evaluate emerging trends.
• One of Tudehope’s favourite quotes is from former US president Calvin Coolidge. It's about persistence, and for about a decade, he kept that quote in his wallet. Here's what else he learnt along the way. 

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