This dissertation deals with the impact of FinTech and the digital transformation in banking and other financial services. In our digital era and with significant demographic changes in the population, people are looking for convenience, efficiency, and speed in their financial transactions. They want to trade through platforms and mobile applications, and these activities include managing their economic life, monitoring their total expenses, applying for a loan, or optimizing their investment strategies. The FinTech industry is an emerging service industry that provides technological solutions, electronic services, and digital products. The FinTech industry is booming after the global financial crisis because the people lost their trust in the banking system. In the FinTech environment, apart from the companies, there are also the Neobanks and Challenger banks, breaking the monopoly of the traditional banks. For this reason, banking institutions are beginning to partner or acquire FinTech companies to integrate new technologies and platforms into their services. BigTech is also moving forward with new services and products in the financial sector. All of them will have to comply with regulations and rules such as GDPR, PSD2, and Open Banking. The GDPR fundamentally shapes how FinTech companies and everyone else should manage data and approach data privacy. Every FinTech business and bank - whether based in Europe or not - must be aware of and comply with the GDPR as if the new rules are violated, companies will face the imminent threat of potentially significant fines of up to € 20 million or 4% of total global annual turnover. Finally, it is worth mentioning that the global health crisis, the coronavirus pandemic gave growth to FinTech. Even traditional banks rushed in to offer FinTech services as the bank’s branches were closed. Technology plays a key role in our lives.