And the question of the OP falls under that umbrella, only those which have created their own sportsbook or a similar service, or those which are developers will have the answer they are looking for.
But then, it would be worth noting that not everybody know how to use search engines, one who knows how to use search engines is likely to find answers to whatever he or she is looking for, answers to questions are lurking everywhere on the internet, like YouTube, Twitter, Facebook, medium, blogs etc, but then, our knowledge of how to use the proper keywords in our searches is what determines our success in finding the answers we seek.
That is why some people still need more accurate information about what they want. And they really need to find out a lot more.