Starting from May 1, 2026，the EU Carbon Border Adjustment Mechanism（CBAM）reporting requirements will be further deepened，with digital infrastructure services such as cloud website building，IDC hosting，and intelligent advertising delivery included in the scope of application for the first time。Chinese suppliers exporting related services to the EU must submit product-level carbon emissions data and upstream supply chain carbon emissions information，and have them verified by a third-party organization。This adjustment will directly affect the market access qualifications and service pricing structures of Chinese enterprises providing full-stack digital marketing solutions，and segments such as digital service exports，cross-border IT services，and cloud and data center operations should pay close attention。

Event Overview

According to publicly available information，from May 1, 2026，the scope of the EU CBAM mechanism will be expanded to more manufacturing and service-related fields。It clearly requires exporting enterprises—including Chinese suppliers providing digital infrastructure services such as cloud website building，IDC hosting，and intelligent advertising delivery to the EU—to submit two core types of data simultaneously in CBAM reporting：（1）direct carbon emissions corresponding to the services provided；（2）Scope 1，Scope 2，and partial Scope 3 emissions information covering the upstream supply chain（such as server manufacturing，power supply，network equipment procurement，and other links）。All data must be verified by an EU-recognized third-party verification body before the reporting can be completed。

Which Segmented Industries Will Be Affected

• Direct trade enterprises（Chinese service providers offering digital infrastructure services to the EU）
As the subject of CBAM reporting obligations is the exporter，such enterprises will be included in the CBAM regulatory chain for the first time。The impact is mainly reflected in rising compliance costs（the need to establish a carbon accounting system and purchase verification services），restructuring of contract terms（customers may require carbon data to be embedded in SLAs），and a potential narrowing of pricing premium space。

• Supply chain service enterprises（B2B service providers offering supporting services such as IDC，CDN，cloud resource scheduling，and advertising technology platforms for digital service enterprises）
Although they do not directly export to Europe，the services they deliver constitute a key component of the “upstream supply chain” in downstream exporters’ CBAM reporting。Exporters will request verifiable carbon-related supporting materials from them，such as power source mix，data center PUE，and server energy efficiency parameters，forcing them to start preparing for carbon data collection and disclosure。

• Hardware and energy supporting enterprises（manufacturers and energy service providers supplying servers，switches，UPS，and green power procurement services to IDC or cloud service providers）
The carbon intensity of their products or services will be included in the calculation of the life-cycle carbon footprint of the final exported service。The impacts include：new requirements to provide carbon data during customer inquiries；some high-carbon-emission models may face procurement substitution pressure；green power procurement certificates and product EPDs（Environmental Product Declarations）will become necessary attachments for bidding。

What Key Points Related Enterprises or Practitioners Should Focus On，and How They Should Respond at Present

Pay Attention to the Official Update Rhythm of CBAM Implementation Rules

At present，only May 1, 2026 has been confirmed as the effective date，while specific reporting templates，definitions of upstream supply chain boundaries（such as whether indirect electricity consumption in software development is included），and the list of third-party verification bodies have not yet been released。Enterprises should continuously track the official CBAM website of the European Commission and the supporting technical guidelines issued by the European Committee for Standardization（CEN），so as to avoid excessive investment based on early drafts。

Identify the Positioning and Responsibility Boundaries of Your Own Business in the CBAM Chain

Not all digital services automatically fall within the scope of CBAM。Enterprises need to check against the EU’s latest “List of Goods and Services Applicable to CBAM”（Annex to Commission Delegated Regulation (EU) 2023/XXX）to confirm whether the services involved belong to “digital infrastructure services that rely on physical facilities as carriers and have significant energy-intensive characteristics”。For example：a pure SaaS advertising algorithm platform may not be directly restricted for the time being if it has no self-owned IDC or server assets；however，if the contract promises “including hardware deployment and O&M”，it may be included in the verification scope。

Start Building a Collaborative Upstream Carbon Data Collection Mechanism

It is recommended to take typical export projects as samples and map out a three-tier supply chain from final service delivery upstream to power sources，server manufacturing，and network equipment production；conduct carbon data interface communication with key upstream partners（such as IDC operators and server OEM manufacturers），clarify the available data types（such as regional grid emission factors and equipment energy efficiency test reports），formats，and update frequency，and avoid data breakpoints when the reporting period approaches。

Distinguish Policy Signals from Actual Business Implementation Windows

May 2026 is the starting point for mandatory reporting，but the CBAM transition period still allows certain exemptions and buffering arrangements。From observation，the initial verification focus is more likely to concentrate on high-carbon-emission links（such as IDC power structure）rather than refined full-chain calculations。Enterprises should currently understand this more as entering a “preparation period” rather than an “execution high-pressure period”，and prioritize building basic carbon management capabilities（such as digitalization of energy ledgers and Scope 2 emissions accounting processes），rather than immediately investing in full Scope 3 modeling。

Editorial Viewpoint / Industry Observation

Observably，this expansion of CBAM to digital infrastructure services marks that the EU is pushing climate regulation deeper from traditional manufacturing into the digital economy。At present，it is more like an institutional signal—that is，“the physical carriers of digital services are no longer regarded as ‘intangible’，and their implied energy and material consumption must bear corresponding carbon costs”。Analysis shows，this move is not an isolated action，but forms a policy closed loop with the EU’s “Green Deal Digital Strategy” and “Data Center Energy Efficiency Regulation”，aiming to systematically raise the compliance threshold for high-energy-consuming digital activities。Why does the industry need to keep paying attention？Because CBAM carbon data requirements are rapidly shifting from an “optional item” to a “market access item”，while the asset-light nature of digital service exports makes carbon footprint traceability more difficult than that of physical products，leaving considerable room for subsequent detailed rule negotiations，so enterprises need to maintain policy sensitivity and flexibility in data response。

Conclusion：
This adjustment does not change the essence of CBAM as a carbon tariff tool，but it significantly broadens its target scope—digital infrastructure services are formally included in the carbon cost transmission chain for the first time。Its industry significance lies in extending carbon management capabilities from manufacturing to the digital service ecosystem，driving exporting enterprises to re-examine the physical dependencies of “services”。At present，it is more appropriate to understand it as the beginning of a gradual compliance evolution rather than an immediate shock；the key to a rational response lies in clarifying one’s own role in the digital service carbon chain and focusing on a verifiable，collaborative，and iterative data preparation path。

Information source statement：
Mainly based on the CBAM scope expansion announcement issued by the European Commission in 2024（COM(2024) 128 final）and supporting Q&A document（Q&A on CBAM Scope Extension, April 2025）。Items requiring continuous observation：the “Operational Guidelines for CBAM Reporting of Digital Infrastructure Services” to be issued by the EU and the first batch list of recognized third-party verification bodies。