Scikit-Optimize is a Python library designed for Bayesian hyperparameter optimization, offering a user-friendly API that simplifies defining search spaces and objective functions. The library supports a variety of optimization methods, including random search and Bayesian approaches like forest, gradient boosted trees, and Gaussian process minimizations, each with different acquisition functions to refine hyperparameter tuning. Although Scikit-Optimize excels in ease of use, documentation, and visualization capabilities, its limitations in handling nested search spaces and parallelization across clusters may hinder some applications. The library effectively improves model performance, as demonstrated in an example using the lightGBM model, where fine-tuning hyperparameters resulted in better performance compared to random search. Overall, while Scikit-Optimize offers powerful features for single-machine setups, its lack of parallelization support may not suit projects requiring distributed computing.