Cortana Skills Kit allows developers to integrate their experiences (bots, web services, apps, and websites) with Cortana. At Ignite 2018 today, Microsoft today announced the new Cortana Skills Kit for Enterprise that will
enable customizable Cortana experiences and skills. This new solution will allow enterprises to build custom skills and agents, test them with users, and fully manage deployment to their organization.
Cortana Skills Kit for Enterprise is built on Microsoft Bot Framework and Azure Cognitive Services Language Understanding service. For now, Cortana Skills Kit for Enterprise is a invite only program and Microsoft will expand it more broadly in the near future.