There are few people that have been at the heart of two significant businesses during important moments in their evolution. 

One such instance for Philippe Chereque was during the creation and formative years of Amadeus. 

The airline-owned global distribution system was attempting to do for European carriers what their counterparts had done elsewhere. 

The Amadeus story since then is well documented but less is known about its early days as, in some respects, a startup. 

Thirty years on, Chereque is assisting at a legacy business - American Express GBT - that is undergoing huge change as it shifts from its role as a travel management company to service provider for travelers in a digital world. 

His experiences at both companies are well-informed and give a unique perspective on driving change in an evolving business through innovation and challenging the status quo as an emerging player.

Chereque is the latest guest for the How I Got Here podcast.

HIGH is a weekly show produced by PhocusWire and Mozio, aimed at getting the inside stories behind startups and innovation in travel and transportation.

Other episodes: on PhocusWire and Mozio.