What is the the difference between formal and informal monitoring?

Formal monitoring involves structured and systematic methods of evaluation, often using established criteria and processes, such as performance reviews or compliance audits. It typically follows a predetermined schedule and is documented, ensuring accountability and consistency. In contrast, informal monitoring is more flexible and spontaneous, relying on casual observations and interactions, such as regular check-ins or conversations. This approach can foster open communication and quick adjustments but may lack the rigor and documentation of formal methods.