OpenBet
Enterprise sportsbook built for very high concurrency
OpenBet is enterprise sportsbook infrastructure with a long history in the UK market, and it is the product several of the largest books in the world settle their volume on.
The thing it is genuinely known for is behaviour under concurrency. A sportsbook that works fine most of the year can fall over in the ninety seconds around a Grand National or a World Cup penalty; OpenBet's reputation was built on not doing that. If your peak load is your business risk, that history is the argument.
It is enterprise software with the procurement cycle to match, and its centre of gravity is UK and North America rather than Brazil. Confirm local market coverage and the implementation timeline before assuming the platform's pedigree answers your question.