Concord Data Systems

Concord Data Systems was a telecommunications equipment manufacturer founded in 1979 by Ken Miller (previously Director of Modem Development at Codex) and based in Marlborough, Massachusetts. The company designed and sold high-speed full-duplex dial-up telephone modems for transmitting digital computer data in analog form over the public switched telephone network. As the modem hardware market commoditized, the business pivoted from industrial data communications to the emerging market for network performance management software and was renamed Concord Communications, best known for its eHealth network management suite. Battery Ventures was one of thirteen investors in that company. Concord Communications was acquired by CA (Computer Associates) on 2005-06-07 for approximately $350 million ($330M cash plus roughly $20M of assumed net debt); CA was itself acquired by Broadcom in 2018. Concord Data Systems is therefore a historical, defunct entity: it operates no website, no developer portal, and no API surface today. It is retained in the API Evangelist network as a venture-portfolio lineage record only.

Concord Data Systems is profiled on the APIs.io network. Tagged areas include Company, Defunct, Networking, Telecommunications, and Modems.

🌐 Visit website 📡 Source on GitHub

6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyDefunctNetworkingTelecommunicationsModemsNetwork ManagementHardwareAcquired

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 6.8/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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Source (apis.yml)

aid: concord-data-systems
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/concord-data-systems.png
name: Concord Data Systems
description: 'Concord Data Systems was a telecommunications equipment manufacturer founded in 1979 by Ken Miller (previously
  Director of Modem Development at Codex) and based in Marlborough, Massachusetts. The company designed and sold high-speed
  full-duplex dial-up telephone modems for transmitting digital computer data in analog form over the public switched telephone
  network. As the modem hardware market commoditized, the business pivoted from industrial data communications to the emerging
  market for network performance management software and was renamed Concord Communications, best known for its eHealth network
  management suite. Battery Ventures was one of thirteen investors in that company. Concord Communications was acquired by
  CA (Computer Associates) on 2005-06-07 for approximately $350 million ($330M cash plus roughly $20M of assumed net debt);
  CA was itself acquired by Broadcom in 2018. Concord Data Systems is therefore a historical, defunct entity: it operates
  no website, no developer portal, and no API surface today. It is retained in the API Evangelist network as a venture-portfolio
  lineage record only.'
url: https://raw.githubusercontent.com/api-evangelist/concord-data-systems/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
x-tier: stub
x-tier-reason: defunct-no-api-surface
x-status: defunct
x-successor: Concord Communications
x-acquired-by: CA (Computer Associates)
x-acquired-date: '2005-06-07'
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Defunct
- Networking
- Telecommunications
- Modems
- Network Management
- Hardware
- Acquired
apis: []
common: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: nochange
  artifacts_added: 0
  pass: local-v1
  notes: Defunct company (1979-2005 lineage; acquired by CA). No live domain, no docs host, no API surface to enrich. concorddata.com
    resolves to a Brandsly domain-for-sale parking page (unrelated); concorddatasystems.com and concord-data.com do not resolve.
    All .well-known probes against the parked domain returned 403.