IBM CICS® Transaction Server, often called CICS, is a world-class, secure, powerful, scalable, mixed-language application server platform used for hosting your transactional enterprise applications in a hybrid architecture.

IBM CICS Transaction Server is an application server that provides an environment to host applications offering services to address concerns like security, transactionality or data exchange between new and existing applications. CICS can provide these services to applications composed of components written in different programming languages allowing for modernization using languages that best fit your developers' skills and your business's needs.

IBM CICS further enhances this by delivering:

• Security: Robust controls to secure transactions, resources and networking in tandem with your z/OS security manager and compliance authority.
• Scalablity: Applications that efficiently scale and prioritize workloads that deliver the full potential of your IBM Z and z/OS sysplex to meet your enterprise needs.
• Flexiblility: A choice of familiar languages and frameworks to integrate and modernize your IBM Z applications and data.

Features

• **Modernize experiences of CICS applications: **Unlock access to CICS apps with API enablement, messaging, event streams and AI.
• **Use enterprise Java® APIs: **Java 11, Jakarta 9 and Eclipse MicroProfile 5 give you a solid foundation for Java components.
• **Enhanced developer productivity: **Automate how you build and deploy with Maven, Gradle, Ansible and CICS Transaction Server resource builder.
• **Improved security and compliance management: **Strengthen security through the network layers with Transport Layer Security (TLS) 1.3, solve sysplex-wide security issues and automate evidence for compliance.
• **Reduced cost of management: **Continuous release of system management features that include new policies, resource overrides, monitoring and diagnostics to better manage CICS regions.
• **Application integration with CICS Transaction Gateway: **CICS Transaction Gateway (CICS TG) serves as a high-performance, secure connector that enables various client applications to access and interact with CICS Transaction Server. It facilitates integration between different platforms and CICS TS, allowing for seamless transaction processing.