z/OS Connect Enterprise Edition features RESTful APIs to and from your mainframe. Expose your applications and data through RESTful APIs or enhance existing mainframe applications with the ability to call external APIs. Point and click API mapping, no code changes required for your existing applications. Evaluate the cost of having your IBM Z applications do RESTful API calls to cloud microservices using zIIPs. Use the estimator to determine the amount of zIIPs your envisioned z/OS Connect EE environment will need by estimating the approximate throughput of microservices calls. The estimator will also help you determine cost savings achievable through the use of zIIPs versus general processors for the same workload.
Customer Information Control System (CICS®) provides the tools and runtime environment to develop and run Java™ enterprise applications in a Java Virtual Machine (JVM) that is under the control of a CICS region. Java applications can interact with CICS services and applications written in other languages. Java on z/OS® provides comprehensive support for running Java applications. CICS uses the IBM® 64-bit SDK for z/OS, Java Technology Edition, Version 7, Version 7 Release 1, or Version 8. Evaluate the cost of running Java applications on a zIIP under z/OS CICS versus running the workload on x86 servers.
IBM Information Management System (IMS) provides Java applications with connectivity to IMS databases and transaction processing from z/OS® and from distributed environments through TCP/IP. The IMS universal drivers are built on industry standards and open specifications. Evaluate the cost of running Java applications on a zIIP under z/OS IMS versus running the workload on x86 servers.
IBM z/OS Container Extensions provides the support to run cloud native Docker application containers directly within IBM z/OS. Evaluate the cost of running Docker OCI compliant applications on a zIIP under z/OS Container Extensions versus running the workload on x86 servers. This scenario provides an estimate for a Java application in a zCX accessing IBM Db2 on z/OS.
IBM® Open Data Analytics for z/OS® integrates key open-source analytics technologies with advanced data access and abstraction services. The solution is designed to simplify data analysis. It combines open-source run times and libraries with analysis of z/OS data at its source, to reduce data movement and increase the value of insights gained from leveraging current data. Evaluate the cost of running analytics on an IBM zIIP using IBM Open Data Analytics for z/OS (IzODA) versus using a distributed platform for analytics.








Select between 1 and 48 cores

Percentage of zIIPs Available Number of zIIPs Available*
  • The tool estimates zIIPs availability as 15% for <20%, 30% for 20% - 40%, 50% for 40%-60%, and 70% for 60%-80%.

Estimate of Required zIIPs

Total Number of Required zIIPs* zIIPs to Be Purchased IBM Z Model
  • The number of zIIPs is prorated based on the estimated amount of workload

z/OS Connect

  CP MIPS zIIP
Without zIIPs  
With zIIPs