Vishal has exceptional knowledge of the payments domain. I had the opportunity to take his mentorship while preparing for my interview, and he explained complex payment concepts in great depth with real-time examples and scenarios. His understanding of the domain, combined with his technical expertise, is truly impressive. His guidance helped me face and successfully crack my interview. I would highly recommend Vishal for his deep payments knowledge, and I strongly suggest beginners explore his blogs — they provide an excellent foundation for understanding payment systems.