Avantio is a complete software solution for professional vacation rental and short-term rental property managers. Founded in 2001 in Spain, Avantio helps agencies that manage from a few dozen to several thousand properties run their entire operation from a single platform, with a transparent flat-fee model and zero commission on bookings, so every reservation a manager generates stays in their business.

The vacation rental Property Management System (PMS) centralizes reservations, guest communication, owner reporting, billing, and operations. The Channel Manager synchronizes availability, rates, and inventory in real time across the major OTAs, including Airbnb, Vrbo, Booking.com, Homes & Villas by Marriott Bonvoy, and dozens of regional portals, alongside a website-and-booking-engine product that powers direct bookings on an agency's own branded site.

Beyond the core platform, Avantio includes purpose-built tools for the operational reality of running a rental portfolio: revenue and pricing tools, an owners' area, a unified inbox for guest messaging, online check-in, payments, and an operations module for housekeeping and maintenance. Custom APIs and a partner marketplace let property managers extend their stack with dynamic pricing, smart-lock, insurance, and guest-experience tools they prefer.

Avantio is used in more than 35 countries by short-term, mid-term, and corporate-stay operators. The company is a long-standing Airbnb Preferred Partner and an active member of the major industry associations across Europe, the United States, and Latin America. The platform is fully localized in English, Spanish, French, Italian, Portuguese, and German, with regional support teams in each market.