DataTerminology.comNEW
Operational responsibility for implementing controls, storage, protection, and day-to-day management of data on behalf of the owner.
DESCRIPTION
Data custodianship covers the technical and operational care of data assets. Custodians implement security controls, manage storage and backups, maintain performance, and execute retention and disposal. They enforce owner-defined policies and coordinate with stewards on metadata and quality. Clear custodianship ensures compliant handling, resilience, and reliable access while separating accountability from technical execution.
ALTERNATIVE DEFINITIONS
Wikipedia
A data custodian is responsible for safe custody, transport, storage of the data and implementation of business rules.
Stresses operational responsibilities for safekeeping and rule implementation.
NIST CSRC
Individual or organizational unit in physical possession of an information system, media, or data and responsible for its safekeeping.
Defines custodianship as possession and safekeeping responsibilities.
University of Minnesota
Data custodians are responsible for the technical environment and daily operations that protect and manage institutional data.
Highlights daily operational and technical environment responsibilities.
RELATED TERMS
Data Stewardship Access Control Backup and Recovery Security Controls Governance Operations
COMPETING TERMS
Data Ownership
KNOWLEDGE AREAS
Data Governance Data Security Data Management Data Storage & Operations
TARGET AUDIENCE
Data Steward Data Governance Manager Data Engineer Cloud Architect Chief Information Officer Data Architect
EXTERNAL SOURCES
- Wikipedia - Data custodian
- NIST CSRC - Custodian role definition
- University of Minnesota - University role responsibilities
- Collibra - Owner vs steward and custodian context
TOP QUESTIONS
What tasks fall under Data Custodianship?
Implementing access controls, backups, encryption, performance tuning, and executing retention/disposal procedures.
Category: Example
How do custodians interact with data owners?
Owners define policies; custodians implement and operate the technical controls to meet those policies.
Category: Relationship
Is Data Custodianship a business or IT role?
Primarily IT/operations, though it collaborates closely with business-aligned owners and stewards.
Category: Misunderstanding
What skills are required for Data Custodianship?
Security, storage, backup/recovery, platform administration, and automation skills are vital.
Category: Requirements
What risks arise without clear Data Custodianship?
Inconsistent protection, access drift, and noncompliant handling can cause breaches and outages.
Category: Risks
How is custodianship documented?
In catalogs, CMDBs, or RACI matrices linking systems and datasets to responsible teams.
Category: Management
Can Data Custodianship be outsourced?
Yes, to managed services or cloud providers, but owners remain accountable for outcomes.
Category: Opinion
How does custodianship support audits?
Custodians provide evidence of controls, configurations, and operational procedures to auditors.
Category: Compliance
What KPIs reflect effective custodianship?
RTO/RPO adherence, access review completion, backup success rate, and incident MTTR.
Category: Metrics