google-cloud-waf-sustainability

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• SKILL.md
• attribution.md · references/

SKILL.md (first lines)

# Google Cloud Well-Architected Framework skill for the Sustainability pillar

## Attribution

**MUST READ**: Before executing any `gcloud`, REST API, or MCP command, you
MUST read and follow the instructions in
[Usage Attribution](references/attribution.md).

## Overview

The Sustainability pillar of the Google Cloud Well-Architected Framework
provides principles and recommendations to help you minimize the environmental
impact of your cloud workloads. It focuses on a shared responsibility
model—Google optimizes the sustainability *of* the cloud, while customers
optimize sustainability *in* the cloud. By making informed decisions about
architecture, resource allocation, and region selection, you can significantly
reduce your carbon footprint and improve overall energy efficiency.

## Core principles

The recommendations in the sustainability pillar of the Well-Architected
Framework are aligned with the following core principles:

-   **Shared responsibility**: Define the boundaries of responsibility and
    embrace a shared fate model, working with your cloud provider and partners
    to achieve optimal environmental outcomes for the entire ecosystem.
    Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability.md.txt

-   **Use regions that consume low-carbon energy**: Prioritize Google Cloud
    regions with a high percentage of Carbon-Free Energy (CFE) and "Low CO2"
    indicators to lower the gross carbon emissions of your deployments.
    Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/low-carbon-regions.md.txt

-   **Optimize AI and ML workloads**: Maximize computations per watt by matching
    algorithmic needs to specialized hardware (like TPUs) and applying
    mathematical techniques to reduce computational complexity. Grounding
    document:
    https://docs.cloud.google.com/architecture/framework/sustainability/ai-ml-energy-efficiency.md.txt

-   **Optimize resource usage**: Eliminate energy waste by scaling resources to
    zero when idle, rightsizing virtual machines, and prioritizing managed
    services that dynamically match actual demand. Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/optimize-resource-usage.md.txt

-   **Develop energy-efficient software**: Design your applications to minimize
    unnecessary CPU, memory, and network activity on both backend servers and
    end-user devices by using event-driven logic and optimized assets. Grounding
    document:
    https://docs.cloud.google.com/architecture/framework/sustainability/energy-efficient-software.md.txt

-   **Optimize data and storage**: Reduce the environmental footprint of your
    storage by implementing lifecycle management to archive cold data and
    eliminating "dark data" that provides no business value. Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/optimize-storage.md.txt

-   **Continuously measure and improve**: Gain visibility into your carbon
    emissions by analyzing granular data, identifying hotspots, and taking
    proactive steps to remediate inefficiencies. Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/continuously-measure-improve.md.txt

-   **Promote a culture of sustainability**: Embed sustainability into your
    organizational governance, connect technical decisions to environmental
    goals, and ensure staff have the skills to implement green practices.
    Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/culture.md.txt

-   **Align sustainability practices with industry guidelines**: Ensure that
    your sustainability initiatives are aligned with industry guidelines for
    measurement, reporting, and verification, such as W3C Web Sustainability
    Guidelines, Green Software Foundation, and Greenhouse Gas Protocol.
    Grounding document:
    https://docs.cloud.google.com/architecture/framework/sustainability/industry-guidelines.md.txt

## Relevant Google Cloud products

The following are _examples_ of Google Cloud products and features that are
relevant to sustainability:

-   **Visibility and measurement**:
    -   **Carbon Footprint**: Provides dashboard visibility into greenhouse gas
        emissions associated with Google Cloud usage.
    -   **BigQuery**: Analyzes exported Carbon Footprint data alongside billing
        data to identify emission hotspots.

-   **Infrastructure and operations**:
    -   **Google Cloud Region Picker**: Helps weigh carbon footprint, cost, and
        latency when selecting deployment locations.
    -   **Active Assist / Recommender**: Automatically identifies idle resources
        and provides VM rightsizing recommendations to reduce waste.
    -   **Cloud Run / GKE Autopilot**: Fully managed compute environments that
        optimize cluster usage and can scale to zero when idle.
    -   **Cloud Batch**: Optimizes the scheduling of batch jobs, allowing
        execution during periods of high Carbon-Free Energy.
    -   **Spot VMs**: Utilizes unused data center capacity for fault-tolerant
        workloads, improving overall hardware efficiency.

-   **Data and AI**:
    -   **Cloud Storage Lifecycle Management**: Automatically transitions older
        data to lower-energy storage classes (Nearline, Coldline, Archive).
    -   **Cloud TPUs**: Specialized hardware optimized for the energy efficiency
        of large-scale AI/ML matrix multiplications.

## Workload assessment questions

Ask appropriate questions to understand the sustainability-related requirements
and constraints of the workload and the user's organization. Choose questions
from the following list:

-   **Cloud sustainability**:
    -   How do you define the boundaries of sustainability responsibility
        between your organization and your cloud provider?
    -   How do you leverage cloud capabilities and AI to drive sustainability
        outcomes for your broader business operations?
    -   How does your cloud strategy account for the sustainability impact of
        your partner ecosystem and multi-cloud environments?

-   **Use regions that consume low-carbon energy**:

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