# Who are Ciena's customers? Who does Ciena earn revenue from?
Canonical: https://valuechain.wiki/ciena · Facet: customers · Updated: 2026-07-12T04:19:37.470092+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Ciena's confirmed revenue counterparties include 아마존, 마이크로소프트 plus 1 undisclosed/aggregate relationship. Per the valuechain.wiki graph: 3 revenue edges, backed by 2 dated sources, 1 of them primary filings (as of 2026-07-12).

### 통신사·정부 (광전송) (mid)
- note: Carrier and government backbone transport — a revenue base beyond hyperscalers.
- [confirms] SEC EDGAR (EN, filing, published 2025-12-11) https://www.sec.gov/Archives/edgar/data/0000936395/000162828025056425/ex9912025q4earningspressre.htm: "FY2025 revenue +19%."

### 아마존 (mid)  → /amazon.md
- note: Supplies DCI to hyperscalers like Amazon — a channel benefiting from distributed-AI datacenter expansion.
- [confirms] Ciena KR (KO, ir, published 2026-01-01) https://www.ciena.kr/solutions/global-data-center-interconnect-networking: "Supplies DCI (inter-datacenter optical) to Amazon and other hyperscalers."
- [confirms] SEC EDGAR (EN, filing, published 2025-12-11) https://www.sec.gov/Archives/edgar/data/0000936395/000162828025056425/ex9912025q4earningspressre.htm: "Supplies DCI (inter-datacenter optical) to Amazon and other hyperscalers."

### 마이크로소프트 (mid)  → /microsoft.md
- note: Supplies DCI to hyperscalers like Microsoft — a large customer at 18% of revenue, both a concentration risk and growth driver.
- [confirms] Ciena KR (KO, ir, published 2026-01-01) https://www.ciena.kr/solutions/global-data-center-interconnect-networking: "Supplies DCI (inter-datacenter optical) to Microsoft and other hyperscalers."
- [confirms] SEC EDGAR (EN, filing, published 2025-12-11) https://www.sec.gov/Archives/edgar/data/0000936395/000162828025056425/ex9912025q4earningspressre.htm: "Supplies DCI (inter-datacenter optical) to Microsoft and other hyperscalers."

Reverse side: https://valuechain.wiki/ciena/suppliers.md · Ripple: https://valuechain.wiki/ciena/ripple.md

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Full node: https://valuechain.wiki/ciena.md · JSON: https://valuechain.wiki/ciena.json