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White Paper . Mainframe

Mainframe MLC and IPLA Guide.

The enterprise guide to IBM mainframe software licensing. Monthly License Charge, International Program License Agreement, Advanced Workload License Charges, Tailored Fit Pricing, and the Sysplex configuration trade offs that shape the cost trajectory.

Pages
40
Time to read
55 min
Updated
Q2 2026

What is inside.

  • The MLC metric and the AWLC, VWLC, and EWLC variants.
  • The IPLA model and the IPLA software inventory across the zSeries portfolio.
  • The Tailored Fit Pricing model and the eligibility criteria.
  • The Sysplex configuration trade offs across capping, workload distribution, and reporting.
  • The Capacity Provisioning Manager and the soft capping economics.
  • The Country Multiplex Pricing model and the multi sysplex implications.
  • The MLC reduction levers across workload optimisation and configuration moves.
  • The IPLA renewal cycle and the negotiation levers at the Passport Advantage cycle.

Who this is for.

  • The CTO architecting the mainframe capacity plan.
  • The Software Asset Management lead managing mainframe compliance.
  • The CFO managing the mainframe cost trajectory.
  • The procurement leader negotiating the mainframe renewal.
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Independence statement. IBM Licensing Experts is an independent advisory firm. We are not an IBM Business Partner, reseller, or affiliate. We have no resell margin tied to our recommendations. This guide reflects our reading of IBM published terms and current customer practice. Read more on why independence matters.
Table of contents

The 8 chapters in this guide.

1. The MLC metric

The MLC metric and the AWLC, VWLC, and EWLC variants.

2. The IPLA model

The IPLA software inventory and the licensing structure.

3. Tailored Fit Pricing

The Tailored Fit Pricing model and the eligibility criteria.

4. Sysplex configuration

The Sysplex configuration trade offs across capping and workload distribution.

5. The capping economics

The Capacity Provisioning Manager and the soft capping economics.

6. Country Multiplex Pricing

The Country Multiplex Pricing model and the multi sysplex implications.

7. MLC reduction levers

The reduction levers across workload optimisation and configuration moves.

8. The IPLA renewal

The IPLA renewal cycle and the negotiation levers at Passport Advantage.

Related expertise

Where this guide connects.

This guide connects to mainframe, Passport Advantage, license consulting, and contract negotiation. The mainframe cost optimisation work is most powerful when paired with the workload optimisation engineering. See the zOS cost optimization guide and the IBM discount benchmarks.

Related white papers

The connected papers in the series.

zOS Cost Optimization

The operational optimisation work behind the mainframe cost trajectory.

Read the guide

IBM Discount Benchmarks

The benchmark data for the mainframe renewal.

Read the guide

Passport Advantage Renewal Guide

The IPLA renewal mechanics at the Passport Advantage cycle.

Read the guide