What is the main point of osmosis?

Could you please elaborate on the central concept of osmosis? I'm particularly interested in understanding its fundamental principles and how it operates in various contexts. Could you explain the key factors that drive osmosis and how it impacts different systems? Additionally, I'm curious about the practical applications of osmosis and how it is utilized in real-world scenarios. Would you be able to provide some examples to illustrate its significance? Thank you for your assistance in clarifying this concept.