This Guidance helps scale product carbon footprint assessments by reducing the manual effort involved in emission factor mapping steps. Environmental impact factors (EIFs) measure activity into metrics to assess potential environmental impacts, such as carbon dioxide equivalent (CO2e). This Guidance provides the ability to automate EIF selection from the v1.2 US Environmentally-Extended Input-Output (USEEIO) database, a database developed by the United States Environmental Protection Agency (US EPA) for product carbon footprinting. It is built on Amazon's CaML model, an algorithm that automates Economic Input-Output based Life Cycle Assessment (EIO-LCA) factor selection using semantic text similarity matching for text descriptions of the product and the industry sector.

Please note: [Disclaimer]

Architecture Diagram

[Architecture diagram description]

Download the architecture diagram PDF 

Well-Architected Pillars

The AWS Well-Architected Framework helps you understand the pros and cons of the decisions you make when building systems in the cloud. The six pillars of the Framework allow you to learn architectural best practices for designing and operating reliable, secure, efficient, cost-effective, and sustainable systems. Using the AWS Well-Architected Tool, available at no charge in the AWS Management Console, you can review your workloads against these best practices by answering a set of questions for each pillar.

The architecture diagram above is an example of a Solution created with Well-Architected best practices in mind. To be fully Well-Architected, you should follow as many Well-Architected best practices as possible.

Implementation Resources

The sample code is a starting point. It is industry validated, prescriptive but not definitive, and a peek under the hood to help you begin.

[Content Type]


This [blog post/e-book/Guidance/sample code] demonstrates how [insert short description].


The sample code; software libraries; command line tools; proofs of concept; templates; or other related technology (including any of the foregoing that are provided by our personnel) is provided to you as AWS Content under the AWS Customer Agreement, or the relevant written agreement between you and AWS (whichever applies). You should not use this AWS Content in your production accounts, or on production or other critical data. You are responsible for testing, securing, and optimizing the AWS Content, such as sample code, as appropriate for production grade use based on your specific quality control practices and standards. Deploying AWS Content may incur AWS charges for creating or using AWS chargeable resources, such as running Amazon EC2 instances or using Amazon S3 storage.

While this Guidance serves as a starting point to help streamline EIF mapping for Life Cycle Assessment (LCA) experts, the results should be vetted by LCA experts prior to considering specific actions. The user should also supplement the results with appropriate information for greater accuracy. This Guidance uses v1.2 USEEIO database as a sample for demonstration purposes only. We recommend that the users apply the most recent version of the database.

The model was tested on products in the US retail sector and does not cover services. The user assumes responsibility to ensure accuracy of the emission factor mapping and to validate the results. Using this Guidance does not guarantee verified greenhouse gas (GHG) disclosures. AWS does not assume any legal liability or responsibility for any errors or omissions or for the results obtained from the use of this Guidance. 

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