Technology Portfolio Management (TPM) Best Practices

Overview

The instinct to govern all technology assets in a single unified inventory is understandable — a single inventory seems simpler to maintain, simpler to report from, and simpler to govern. The instinct is correct about simplicity and incorrect about effectiveness. Different classes of technology assets have governance obligations that are distinct enough that a single inventory either imposes the most demanding governance requirements of any category on all categories equally — making governance burdensome for categories that do not warrant it — or defaults to the least demanding requirements — making governance inadequate for the categories that need the most. A Software Technologies Inventory that tries to also govern Hardware Technologies will either impose SBOM requirements on hardware assets that do not have software components, or fail to impose them on software assets that do.

The Enterprise Model principle that resolves this is the same principle that distinguishes the Applications Inventory from the Software Licenses Inventory from the Contracts Inventory from the Vendors Inventory — different entity types with different governance obligations and different data models belong in separate, connected inventories. Connection, not consolidation, is the governance design that produces both coherence and appropriateness. The Technologies Inventory family consists of six connected inventory types, each a distinct governed data asset, all connected through shared semantic identifiers and the Enterprise Ontology.

Best Practice

Design and implement the Technologies Inventory as a family of six connected inventory types, each with its own governance framework, data model, ownership model, and compliance obligations, all sharing the same semantic identifier conventions and data quality standards. Establish each inventory type as a distinct organizational asset with a named owner, a defined data quality standard, and a regular review cadence. Connect the inventory types to each other and to the other Enterprise Model inventories through semantic identifier references that make cross-inventory traversal possible without a data transformation layer.

Benefit(s)

Governing the Technologies Inventory as a connected family of specialized inventories rather than as a single monolithic record produces governance that is both coherent at the portfolio level and appropriate at the category level. Hardware governance disciplines — ITAD, physical lifecycle management, sustainability — are applied to hardware records without being imposed on software records. Open source governance disciplines — SBOM maintenance, license compliance, supply chain risk — are applied to open source component records with the intensity they require. And the connections between inventory types — which hardware assets run which software platforms, which open source components are embedded in which software technologies — are explicit and traversable because the family design makes those connections a first-class governance concern.