In 2021 the betting vertical has quickly recovered after the abrupt halt caused by the pandemic, and online sportsbooks have significantly increased their market share thanks to the closure of physical betting shops. In Europe, home of the wealthiest gambling markets in the world, sports betting accounts for over 40% of all iGaming income, raking in an astounding €10 billion in gross gaming revenues in 2019. The forecasted year-on-year growth between 2020 and 2025 stands at 10%. Moreover, lockdown around the world and suspension of sporting events accelerated the adoption of alternative prediction markets, opening new revenue streams: the GGR derived from esports, for example, grew by 39% in 2020 up to the €280 million mark, following years of growth at much lower rates. Given the sector's sustained growth over the past few years, starting an online sportsbook is an attractive proposition for investors everywhere. In this new article the experts of Slotegrator explain the specificities of this iGaming sector and the outlines what's needed to get a successful online sportsbook off the ground.