Rafi Sands shares the inspiration and reasoning behind Tandem, a startup to let companies share office space.

If you've been following along over the last few months, you're already seeing the growing undercurrent trend in fractional office platforms, services and technology. Whilst the trend could represent an opportunity for flex spaces to explore new ways of sharing space between members, it could also be a threat with the huge troves of vacant office space needing to be filled.