If someone wants to create a cryptocurrency exchange company, I recommend paying attention to the white label exchange software. This is much more convenient than creating from scratch, because fewer resources are needed, both monetary and time of various specialists. Those who offer ready-made solutions for crypto exchange have been doing this for a long time and understand all sorts of nuances, including fraud protection, an interface, and so on. And it seems cheaper to me than buying already running crypto exchange software.
I would recommend a ready-made solution for creating a cryptocurrency exchange software from the Austrian provider Merkeleon. Their product receives updates every month, round-the-clock support, 11 languages ​​for the platform. Launch of a new platform within 2 weeks. You can contact them for further details.