The digital transformation of entertainment services has revolutionized how consumers access cinema facilities. This research paper presents a comprehensive framework for developing an Online Movie Ticket Booking System (OMTBS) that addresses limitations of traditional box-office approaches. The proposed system employs a three-tier architecture with ASP.NET framework, C# programming language, and SQL Server database management. Key functionalities include real-time seat selection, secure user authentication, dynamic payment processing, and administrative control panels. The system development followed agile methodology with iterative testing phases. Results demonstrate significant improvements in user convenience, operational efficiency, and revenue optimization for cinema operators. The framework provides a scalable solution adaptable to various theater configurations while maintaining robust security protocols for financial transactions.