In this 3‑day introductory and advanced course for software developers and software architects, you will acquire the essential skills to use UML as a powerful tool for design, planning, and control in object‑oriented systems. The course provides practical, hands‑on instruction in the fundamentals of object‑oriented modeling, with a focus on avoiding errors in process modeling and ensuring seamless integration of software models. Through extensive exercises and practice‑oriented examples, participants develop a deep understanding of object‑oriented system development — from analysis (OOA) to design (OOD) and programming (OOP). After completing the course, you will be able to use UML as an effective communication and planning tool for your software projects and successfully apply the principles of object‑oriented architecture.