Zakazivanje Online is a modern software solution aimed at improving the scheduling process, ie booking appointments for various types of services, improving the time management process, optimizing the working hours of employees and other staff involved in the scheduling process. By applying the best aspects and principles of Software as a Service (SaaS), we have created a flexible and modular software solution that can meet the needs of a large number of users with the ability to efficiently customize and develop new functionalities based on specific user requirements.