In 2023, the Singapore-based startup company Horizon Quantum Computing was on the cusp of fast expansion and the founder faced the challenge to decide where to open the second office outside Singapore. To make a choice from the list of 10 countries, the founder had to consider the likelihoods of acquiring and competing for talent, developing business partnerships with quantum computer hardware makers, gaining market access for its upcoming product, among other issues. This case study also explores Singapore's startup ecosystem and its years long efforts in building a growth environment for deep tech companies.