Directory DevOps & Platform EngineeringInternal Developer PlatformsHeirloom Computing

Heirloom Computing

Heirloom helps enterprises migrate IBM mainframe applications to Java stacks deployable on-premise, any cloud, or IBM Z.

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About Heirloom Computing

Heirloom is a mainframe migration solution that transforms IBM mainframe applications for deployment on Java stacks. It converts legacy applications into cloud-native applications that run on-premise, on any cloud, or on IBM Z, avoiding infrastructure lock-in. It is used by organizations with large legacy mainframe real-estates seeking replatforming or refactoring outcomes.

How to evaluate Internal Developer Platforms

This is how the CIOPages Research Team evaluates this category. It is not an assessment of Heirloom Computing. It comes from our Internal Developer Platforms (IDP) buyer guide.

25%

Software Catalog & Service Ownership

Accuracy of the catalog-of-record without manual upkeep (auto-discovery from Git/cloud/Kubernetes, real-time sync), the flexibility of the entity/data model (custom component types, relationships), dependency and API mapping, and how cleanly it answers “who owns this service?” during an incident

25%

Golden Paths & Self-Service Provisioning

Software templates / scaffolder for new-service creation, day-2 self-service actions (not just day-0), whether actions actually provision infrastructure or merely file a request, workflow/automation depth, and integration with an orchestration engine (Score, dynamic config) where real provisioning is the goal

15%

Scorecards, Standards & Governance

Maturity rubrics and scorecards (production-readiness, security, reliability), the ability to set and roll up global standards across teams, automated compliance checks, RBAC granularity, SSO/SAML, and audit logging on the portal itself

15%

Integration & Ecosystem

Breadth and quality of pre-built integrations (SCM, CI/CD, cloud, observability, incident, security), Backstage plugin compatibility where relevant, API-first / IaC support (Terraform, Pulumi) for managing the portal as code, and an in-IDE / MCP path so developers stay in flow

10%

Operating Model & Total Cost to Run

Build vs. buy vs. managed fit, realistic platform-engineer headcount to operate it, upgrade burden (code changes vs. version bumps), dependency-patch cadence, hosting model (self-managed, single-tenant SaaS, multi-tenant), and SOC 2 / compliance posture of the vendor

10%

Extensibility & Developer Experience

Customization ceiling vs. floor (no-code speed against framework flexibility), how opinionated the golden paths are and whether that fits your culture, UI/search quality, TechDocs and onboarding, and evidence of sustained developer adoption rather than mandated logins

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Quick Facts

heirloomcomputing.com

CategoryDevOps & Platform Engineering

SubcategoryInternal Developer Platforms

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