Ensemble learning is a powerful machine learning technique that combines multiple models, known as weak learners, to improve the overall performance of predictive models for both regression and classification tasks. Techniques such as max voting, averaging, and stacking enhance model accuracy by aggregating predictions from individual models, thereby transforming weak learners into strong ones. Advanced methods like bagging and boosting further refine predictions by reducing model variance and bias, respectively. Libraries such as Scikit-learn and Mlxtend facilitate the implementation of these ensemble techniques, offering tools like RandomForest, AdaBoost, and StackingCVClassifier. Ensemble learning is most effective when base models are diverse and uncorrelated, allowing their combined strengths to address each other's weaknesses. This approach is particularly beneficial in preventing overfitting and achieving robust, stable models that perform well across various datasets.