Too many marketers still believe that sustainability in marketing comes at the expense of cost-effectiveness – when, increasingly, adopting sustainable marketing can improve commercial performance. So says David Radford, former CMO of Allianz in the UK and Associate Fellow of Said Business School. David's contention is that marketing needs to get its house in order when it comes to sustainability. As our marketing output is one of the most visible aspects of a business, he says, and as consumer opinion shifts dramatically, it simply makes good business sense for marketers to prioritise a more sustainable approach – even if the wider organisation has yet to adopt a sustainable business strategy. So what does "sustainable marketing" look like? And what are the wider business and societal implications?