Change Sets and Data Loader are deploy solutions that should be used to ensure skills-based routing is operational in Production. Change Sets are collections of metadata components that can be deployed from one Salesforce org to another. Change Sets can be used to deploy the configuration settings for skills-based routing, such as the skills, skill assignments, routing configurations, presence configurations, or service channels. Data Loader is a tool that can be used to insert, update, delete, or export records in Salesforce. Data Loader can be used to deploy the data records for skills-based routing, such as the work items, agents, queues, or routing priorities. Verified References: Service Cloud Consultant Certification Guide & Tips, Change Sets Overview, Data Loader Overview