Four major hospitality companies – Accor, Hilton, IHG and Marriott International – have invested a combined $50 million in Groups360 to enhance its GroupSync booking engine,  which promises to make group travel easier for meeting planners. GroupSync, according to the company, delivers the first truly transparent, efficient and cost-effective online tool for meeting planners to source and book meetings and events across a wide selection of brands. Groups360 was founded in 2014 with the goal of simplifying and transforming the ways meetings are booked. GroupSync, using proprietary matching algorithms designed specifically for meeting planners, has helped place thousands of events at the right venue, saving planners time and money, according to the company. Kemp Gallineau, Groups360 CEO, said the investment would be used to scale up sales, marketing and engineering teams to deliver an enhanced GroupSync functionality to more planners.