Growth and consolidation in vacation marketplaces has driven investment into the short-term rentals market.

Some analysts are even projecting the short-term rentals market to hit $169.7 billion by 2019 and $193.9 billion by 2021 due to changes in the travel industry, like the Chinese traveling boom, the “millennial traveler” and the cost reduction of air travel.

With all that money getting thrown around, startups are forming to supplement marketplaces like Airbnb. Companies like Guesty, which just raised $3 million, are building tech to help property managers optimize their listings.

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