The Hopsworks Feature Store integrates with W&B at the Python API level, by model training pipelines using API keys to connect to both Hopsworks and W&B. Hopsworks typically provides/stores data, while W&B stores experiments (training runs).
Training pipelines that use the Hopsworks Feature Store (for example, to create training data or to save models to Hopsworks) can be integrated with W&B to store the results of training runs as experiments in Weights & Biases.