COMPANIES · CHIP MFG & PACKAGING

ASE Technology

Taiwan's ASE Technology describes itself as the leading provider of outsourced semiconductor assembly and test services: it takes finished silicon wafers from chip designers and foundries, cuts, packages and tests the chips, and also runs an electronics manufacturing arm (USI).

EnablerChip mfg & packaging
What it does

Taiwan's ASE Technology describes itself as the leading provider of outsourced semiconductor assembly and test services: it takes finished silicon wafers from chip designers and foundries, cuts, packages and tests the chips, and also runs an electronics manufacturing arm (USI).

Why it matters

AI accelerators increasingly depend on advanced packaging that joins GPUs or custom chips to high-bandwidth memory, and ASE (with its SPIL unit) is one of the few companies outside TSMC with that capability at scale; it is a member of TSMC's 3DFabric Alliance for advanced packaging.

How it makes money

Chip companies and foundries pay it for packaging, assembly and test services, and electronics brands pay its USI unit for contract manufacturing.

Geography

Taiwan (Kaohsiung)

AI stack position

Chip manufacturing, memory and packaging. The foundries, memory makers, and packaging and testing businesses that physically manufacture AI chips. This is where a chip design actually becomes a real, physical piece of silicon.

Connections (8)

Every connection below is tied to a readable source, date, classification and statement of its limits. A company source establishes what that company stated; it does not necessarily provide independent confirmation.

Current relationships (1)

ASE Technology is a 3DFabric Alliance packaging partner of TSMC
Partners withCurrent
TSMC's 3DFabric Alliance page lists Advanced Semiconductor Engineering (ASE) Group and SPIL among its OSAT (outsourced assembly and test) members.

Source: Source undated · reviewed 2026-09-26

Evidence: Primary-source statement · Reported operating

Limits: Alliance membership only; does not establish which TSMC products ASE packages, volumes, or revenue from TSMC-related work. The page carries no date.

TSMC 3DFabric Alliance ↗

Dated or announced (5)

ASE Technology is reported to take outsourced CoWoS packaging steps from TSMC
Manufactures forDated / announced
TrendForce, citing Korean and Chinese media, reported that TSMC has decided to expand outsourcing of the chip-on-wafer step of CoWoS packaging to OSATs including ASE.

Source: 2026-08-05 · reviewed 2026-09-26

Evidence: Secondary reporting (unconfirmed by primary parties) · Reported plan; not confirmed by TSMC or ASE

Limits: Media report based on unnamed sources; not confirmed by either company and does not establish volumes, timing, pricing or which end customers' chips are involved.

TSMC Reportedly Expands Outsourcing of Key CoWoS Front-End Step to OSATs Amid Rising NVIDIA, ASIC Demand ↗
ASE Technology is reported to package Trainium chips for Amazon Web Services
Manufactures forDated / announced
TrendForce, citing Economic Daily News, reported that ASE's FoCoS 2.5D packaging serves Amazon Web Services' Trainium AI accelerator.

Source: 2026-01-14 · reviewed 2026-09-26

Evidence: Secondary reporting (unconfirmed by primary parties) · Reported orders; not confirmed by ASE or AWS

Limits: Secondhand press report; does not establish volumes, contract terms, share of Trainium packaging, or that the work continues.

ASE Buys NT$2.8B Zhunan Facility, Packaging Orders Reportedly Span NVIDIA, AMD, and More ↗
ASE Technology is reported to package Vera CPUs for NVIDIA
Manufactures forDated / announced
TrendForce, citing Economic Daily News, reported that ASE's FoCoS 2.5D packaging serves NVIDIA's Vera server CPU.

Source: 2026-01-14 · reviewed 2026-09-26

Evidence: Secondary reporting (unconfirmed by primary parties) · Reported orders; not confirmed by ASE or NVIDIA

Limits: Secondhand press report; does not establish volumes, whether ASE packages NVIDIA GPUs, or contract terms.

ASE Buys NT$2.8B Zhunan Facility, Packaging Orders Reportedly Span NVIDIA, AMD, and More ↗
ASE Technology is reported to package Venice server CPUs for AMD
Manufactures forDated / announced
TrendForce, citing Economic Daily News, reported that ASE's FoCoS 2.5D packaging serves AMD's Venice server CPU.

Source: 2026-01-14 · reviewed 2026-09-26

Evidence: Secondary reporting (unconfirmed by primary parties) · Reported orders; not confirmed by ASE or AMD

Limits: Secondhand press report; does not establish volumes, contract terms, or that ASE packages AMD's AI accelerators.

ASE Buys NT$2.8B Zhunan Facility, Packaging Orders Reportedly Span NVIDIA, AMD, and More ↗
Aehr Test Systems partners on wafer-level burn-in services with ASE Technology
Partners withDated / announced
Aehr and ISE Labs, which Aehr describes as a subsidiary of ASE, announced a partnership to deliver wafer-level test and burn-in services for high-performance computing and AI processors.

Source: 2025-11-03 · reviewed 2026-09-26

Evidence: Primary-source statement · Announced; not confirmed operating

Limits: Announcement only; the counterparty is ASE's ISE Labs subsidiary, and the release does not establish service volumes, revenue or customers served.

Aehr Test Systems and ISE Labs Announce Partnership on Wafer-Level Test and Burn-in for High-Performance Computing and Artificial Intelligence Processors ↗

Comparisons (2)

JCET competes with ASE Technology
Competes withComparison only
TrendForce's 2024 ranking of outsourced assembly and test providers placed ASE first (about $18.5 billion revenue) and JCET third (about $5 billion).

Source: 2025-05-13 · reviewed 2026-09-26

Evidence: Analytical comparison · Product/market overlap

Limits: Research-firm ranking of 2024 revenue; does not establish head-to-head customer competition, current shares, or comparable AI packaging capability.

Top 10 OSAT Companies of 2024 Revealed, Says TrendForce ↗
ASE Technology competes with Amkor Technology
Competes withComparison only
ASE and Amkor are both outsourced semiconductor assembly and test providers listed as OSAT members of TSMC's 3DFabric Alliance.

Source: Source undated · reviewed 2026-09-26

Evidence: Analytical comparison · Product/market overlap

Limits: Shows overlapping service categories only; does not establish relative market share, pricing, or head-to-head wins.

TSMC 3DFabric Alliance ↗

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Inclusion in this database is not an endorsement of a company or its securities. Nothing here is a recommendation to buy or sell anything, and none of it is individualized investment advice. See the disclosures. Data: AI Map v3.24, released .