Conflict-Driven Clause Learning (CDCL) is a technique used in Boolean Satisfiability Problem (SAT) solvers to improve their efficiency. When a conflict arises during the solving process, CDCL analyzes the conflicting assignments to derive new clauses. These clauses help to prevent the same conflict from occurring again, effectively pruning the search space. By learning from conflicts, CDCL allows solvers to make more informed decisions about variable assignments. This process enhances the solver's ability to navigate complex problem instances, leading to faster solutions. Overall, CDCL is a key component in modern SAT solving strategies.