interconnected system
163539·updated Aug 30, 2026A configuration of two or more distinct IT systems—spanning organizational, network, or authorization boundaries—that are directly linked for the purpose of sharing data, resources, or services. What distinguishes it from a single system with internal components is the presence of a cross-boundary connection that introduces shared risk: each party's security and privacy posture can affect the other's, which is why authority documents treat the connection itself as a security object requiring its own governance instruments (interconnection security agreements, architectural controls, and joint authorization). In practice, standards bodies use the term to frame obligations such as mandating specific architectural constraints, documenting mutual protection requirements, and maintaining the confidentiality, integrity, and availability of information as it moves across the join.
Source
between interconnected systems. Organizations consider mandating specific architectural solutions when required to enforce specificthe sentence this term was read in
generalized from a web lookup of the quoted expression at proposal time Verdict: term of art.
- 1 of 5 INTERCONNECTION SECURITY AGREEMENT BETWEEN
- NIST Special Publication (SP) 800-18 Rev. 2 (Withdrawn), Developing Security, Privacy, and Cybersecurity Supply Chain Risk Management Plans for Systems
- CMS Interconnection Security Agreement (ISA)
- interconnection security agreement
- NIST SP 800-47 Rev. 1 (Initial Public Draft)
- NIST SP 800-53 Rev. 5 (Initial Public Draft)
A definition generalized from search results is a draft to react to, not provenance. Confirm it against an authority document before this term is verified.
A web lookup ran when this term was proposed
A configuration of two or more distinct IT systems—spanning organizational, network, or authorization boundaries—that are directly linked for the purpose of sharing data, resources, or services. What distinguishes it from a single system with internal components is the presence of a cross-boundary connection that introduces shared risk: each party's security and privacy posture can affect the other's, which is why authority documents treat the connection itself as a security object requiring its own governance instruments (interconnection security agreements, architectural controls, and joint authorization). In practice, standards bodies use the term to frame obligations such as mandating specific architectural constraints, documenting mutual protection requirements, and maintaining the confidentiality, integrity, and availability of information as it moves across the join.
Advisory only. A term this product ships is defined by an authority document, not by a search result.
Proposed during multiword review of this document in the CKI mapping queue.
Attested in
Classifications
Entity Type
Sensitivity
Information Class
Variants
- plural
- interconnected systems
- possessive
- interconnected system's
- pluralpossessive
- interconnected systems'
Framework definitions
- §1 · attested_usage_reviewer_confirmed
- No definition is given in NIST SP 800-171r3. The term is attested in use at 3 citations in that document; a definition is pending curation.Increment 2: attested in 800-171r3 without a glossary definition.
- §1 · web_lookup_draft
- A configuration of two or more distinct IT systems—spanning organizational, network, or authorization boundaries—that are directly linked for the purpose of sharing data, resources, or services. What distinguishes it from a single system with internal components is the presence of a cross-boundary connection that introduces shared risk: each party's security and privacy posture can affect the other's, which is why authority documents treat the connection itself as a security object requiring its own governance instruments (interconnection security agreements, architectural controls, and joint authorization). In practice, standards bodies use the term to frame obligations such as mandating specific architectural constraints, documenting mutual protection requirements, and maintaining the confidentiality, integrity, and availability of information as it moves across the join.DR-088 backfill from the noun definition column