An online appointment booking system is a digital solution from which business and professional consultants can automate and manage their schedule in an efficient way. Clients will be able to book appointments online, see what time they are free, and get instant confirmation in real time through this system. It should have calendar syncing, automated reminders, rescheduling capabilities, and secure payment processing abilities. This system provides convenience for both business and its customers regardless of its usage by healthcare providers, salons, consultants, among any other service-based business. The system eliminates the errors of manual booking and no-show occurrences.