Seldon Core is a production-grade open source model serving platform. It packs a wide range of features built around deploying models to REST/GRPC microservices that include monitoring and logging, model explainers, outlier detectors, and various continuous deployment strategies such as A/B testing, canary deployments, and more. ZenML's Seldon integration provides predefined pipeline steps that allow you to deploy models from various ML frameworks to Seldon without requiring any custom code.