CICS TS provides mixed-language application serving for mission-critical services in a scalable and secure environment, able to process incredibly high workloads in a performant and cost-efficient manner.
Java on CICS provides developers with the means to rapidly create new applications, extensions and services to meet the needs of the business.
Using WebSphere Liberty to expose an existing CICS program as a web service using the JAX-WS specification
Through exposing your applications as a web service you extend their value through enabling simpler consumption. This allows you to re-use trusted services with new audiences such as business partners or other departments in your organization.