iGaming legislation differs radically. Somewhere everything is transparent and legalized, somewhere there is a complete gray market. In order to avoid making costly mistakes, it is worth understanding in advance. I found a useful source that provides a global picture of regulation: https://www.insidermonkey.com/blog/igaming-market-analysis-a-region-by-region-breakdown-1486119/ . This gave me a full understanding of which countries are legal to operate in. For those looking to scale, it is important to assess not only licenses but also reputational risks in advance. This article is a good start for choosing regions with a transparent legal framework and a loyal audience.