Sustainability is one of the most discussed trends in the hospitality industry today. However, it is far from being universally mandated. Upcoming regulatory changes, such as the Green Claims Directive, are set to increase the pressure on hotels and their travel partners to substantiate sustainability claims. Additionally, platforms like Booking.com are beginning to require evidence of sustainability practices in the form of certification. While certification can help to verify sustainable claims through an impartial 3rd party audit process, there is much critique given the current landscape of over 200 certification schemes. This proliferation of certification programs reflects both the growing emphasis on sustainability within the hospitality sector as well as the absence of a unified approach.