ITAM glossary: 50 IT asset management terms explained

A plain-language reference for the 50 terms you'll meet in IT asset management, software asset management, and SaaS management. Bookmark this — every other article in our library links back to it.

A

Asset

Anything of value to an organisation that needs to be tracked: hardware, software, license entitlements, contracts, information.

Asset register

The system of record listing every asset with owner, location, status, and lifecycle stage. Foundational for ITAM, ISO 27001, SOC 2, and finance reconciliation. More on ISO 27001 asset registers.

Asset tag

A physical or digital identifier (sticker, barcode, QR code, RFID) bonded to a hardware asset for tracking. Asset tagging best practices.

Audit (vendor / license)

A formal process where a software vendor verifies your license consumption against entitlement. Microsoft, Oracle, IBM, Adobe, SAP, and Autodesk are the most active. Defending against vendor audits.

Auto-renewal

A contract clause that automatically renews a subscription unless notice is given in a specified window. The single most expensive default in software.

B

BYOD (Bring Your Own Device)

A policy where employees use personal devices for work. Lower acquisition cost; higher security and support cost. TCO comparison.

Burn rate

In the context of SaaS, the rate at which seats or licenses are consumed against a pre-purchased pool. High burn = upcoming renewal pressure.

C

CapEx vs OpEx

Capital expenditure (purchase, depreciated over years) vs. operating expenditure (subscription, expensed monthly). Cloud and SaaS shift IT spend from CapEx to OpEx.

CMDB (Configuration Management Database)

A database storing configuration items (CIs) and their relationships. Originated in ITIL; overlaps with but is broader than an asset register.

CI (Configuration Item)

A trackable item in a CMDB — a server, a service, a database, a piece of network gear.

Concurrent user license

A license that allows N simultaneous users (vs. N named users). Common in older enterprise software; less common in modern SaaS.

Contract repository

A central store of vendor contracts with parsed metadata (effective date, end date, auto-renewal, notice period, owner).

Cost centre

The accounting unit a cost is allocated to — used for budgeting and chargeback. Every contract should map to one.

D

DaaS (Device as a Service)

A leasing model where hardware is provided on subscription, often bundled with provisioning and refresh. HP DaaS, Dell DaaS are typical examples.

Depreciation

The accounting practice of spreading an asset's cost over its useful life. IT hardware is typically depreciated over 36–60 months.

Discovery (network / SaaS)

Automated detection of devices on a network or SaaS in use across an organisation. Lansweeper, Microsoft Defender, and SaaS-API integrations all do this.

E

EA (Enterprise Agreement)

A multi-year master licensing agreement, typically Microsoft. Bundles multiple products with annual true-ups and a 3-year term.

EDR (Endpoint Detection and Response)

Security software running on endpoints (CrowdStrike, SentinelOne) — a standard line item in hardware TCO.

Entitlement

What you've contractually purchased — e.g., 50 seats of Salesforce Enterprise. Compared to consumption (active users) for compliance and rightsizing.

H

Hardware lifecycle

The stages a device passes through: procurement → deployment → in-use → reassignment → retirement → disposal. Full guide.

I

IdP (Identity Provider)

A service that authenticates users — Google Workspace, Microsoft Entra (Azure AD), Okta. The spine of joiner/leaver flows.

ITAM (IT Asset Management)

The discipline of tracking, optimising, and disposing of an organisation's IT assets across their lifecycle.

ITIL

A framework of best practices for IT service management. ITAM is one of its component disciplines.

ITSM (IT Service Management)

The umbrella discipline covering helpdesk, incident management, change management, asset management. ServiceNow and Jira Service Management are typical platforms.

L

License compliance

Using software within the bounds of what you've purchased. Non-compliance triggers vendor audit findings and true-ups.

License optimisation

Reducing license cost through rightsizing, tier downgrade, vendor consolidation, and renegotiation. Detailed playbook.

License rightsizing

Adjusting paid seats to match actual usage. Typically reclaims 15–30% of SaaS spend on first sweep.

Lifecycle stage

Where an asset sits in its lifecycle: procurement, in use, reassignment, retirement, disposed.

M

MDM (Mobile Device Management)

Software for centrally managing mobile and laptop fleets. Jamf (Apple), Microsoft Intune, Kandji, Mosyle are typical.

MTTR (Mean Time to Reclaim)

The average time between a leaver's deactivation and their licenses being reclaimed. Target: same day for IdP-connected SaaS.

O

Onboarding (employee)

The process of provisioning a new hire's accounts, hardware, and access. Mirror image of offboarding.

OAuth

The authorisation standard SaaS apps use to grant third-party access via your IdP. The OAuth grants list is a key shadow-IT discovery source.

P

PVU (Processor Value Unit)

IBM's licensing metric for middleware, based on processor cores. Sub-capacity licensing requires ILMT.

Procurement

The process of acquiring new assets — hardware, software, services — including approval, vendor selection, and contracting.

R

Refresh cycle

The schedule on which hardware is replaced. Typically 36, 48, or 60 months for laptops, depending on role.

Renewal pipeline

The list of upcoming contract renewals, usually viewed on a 90-day rolling window.

Reassignment

Returning a device or license to the available pool when one user leaves and assigning it to another. Defers procurement cost.

RFID asset tag

A radio-frequency tag enabling bulk asset scanning. Useful for large fleets but adds cost. Tag types compared.

S

SAM (Software Asset Management)

The software-focused subset of ITAM. Tracks license entitlements, consumption, compliance.

SaaS (Software as a Service)

Cloud-delivered software billed on subscription, typically per seat or usage.

SaaS management platform (SMP)

A category of tools focused specifically on SaaS visibility and optimisation — Zylo, Productiv, Torii. Distinct from full ITAM.

Shadow IT

Software in use without IT or finance approval. Typically 30–50% of mid-market SaaS spend. Detection guide.

SOC 2

A security audit framework based on the AICPA Trust Services Criteria. Asset inventory and access management are core controls.

SSO (Single Sign-On)

Authentication once, authenticated everywhere. The mechanism IdP-driven joiner/leaver flows depend on.

Subscription

A recurring SaaS payment, monthly or annual.

T

TCO (Total Cost of Ownership)

The full cost of an asset over its life — acquisition, operation, support, disposal. Hardware TCO framework.

Tier downgrade

Moving a user from a higher-cost tier (e.g., M365 E5) to a lower-cost tier (E3) when premium features aren't being used.

True-up

An adjustment to the licensed quantity (and bill) to reflect actual usage. Often imposed after a vendor audit.

U

ULA (Unlimited License Agreement)

An Oracle licensing structure granting unlimited use of specified products for a fixed term. Often offered to settle audit disputes.

Utilisation rate

Active users ÷ paid seats. The single most important license-management metric.

V

Vendor consolidation

Reducing the number of vendors providing similar capabilities — picking one project tool across two, one video tool across two.

Virtualisation

Running multiple OS instances on shared hardware (VMware, KVM). Significant licensing implications, especially for Oracle and Microsoft.