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Sustainability & Environmental Impact

13 posts · Apr 2019 – Sep 2023

What this trail covers

Cloudflare is actively working to reduce its environmental impact by optimizing its global network infrastructure for energy efficiency. This includes leveraging renewable energy, focusing on data centers with low PUE, and implementing waste diversion and energy efficiency measures. A key aspect of this evolution is the strategic adoption of hardware, such as Arm CPUs, to significantly improve performance per watt and reduce overall energy consumption. This also encourages broader industry shift. The company's network infrastructure is designed for high utilization, reducing idle hardware energy consumption. Caching is employed to reduce data transfer and origin server load, saving energy. Performance optimizations across the network and platform, including the use of isolates in Cloudflare Workers, further reduce energy consumption by eliminating overhead and enabling efficient execution of customer code. Cloudflare offsets its remaining carbon footprint by purchasing Renewable Energy Certificates (RECs) to match 100% of its global electricity usage.

All Cloudflare trails
  1. Switching to Cloudflare can cut your network carbon emissions up to 96% (and we're joining the SBTi)This post details an independent study finding that migrating enterprise network services to Cloudflare can reduce related carbon emissions by up to 96%, primarily due to service consolidation and increased server utilization. It also announces Cloudflare's application to set science-based carbon reduction targets through SBTi, building on existing commitments to 100% renewable energy and carbon offset/removal.
  2. How we’re making Cloudflare’s infrastructure more sustainableThis post details Cloudflare's approach to reducing the environmental impact of its server hardware. It outlines the four parts of a server's carbon footprint (embodied emissions, packing/shipping, use, and end-of-life), emphasizing that use-phase emissions are the largest contributor. The post highlights strategies for reducing embodied emissions through modular design, reliance on open standards for hardware reuse, and advanced recycling techniques. It introduces Cloudflare's Gen 12 servers, which emphasize modularity and open standards (OCP 2.0/3.0, Datacenter Modular Hardware System, OpenBMC) to maximize component reuse and reduce e-waste. The post also discusses the ongoing effort to deploy more power-efficient hardware architectures and tune them for Cloudflare's workloads, citing Gen 11 servers as an example of improved performance per watt.
  3. Crawler Hints: How Cloudflare Is Reducing The Environmental Impact Of Web SearchesThis post introduces 'Crawler Hints,' a new initiative aimed at reducing the environmental impact of web searches. It highlights the significant waste generated by search engine crawlers revisiting unchanged pages and proposes a solution where Cloudflare proactively informs crawlers about content changes. This reduces unnecessary traffic, conserves energy, and improves search result relevance. The post quantifies the potential carbon savings and details how Crawler Hints will work by leveraging existing protocols like sitemaps and providing real-time change notifications without burdening origin servers.
  4. Helping build a green InternetThis post details Cloudflare's initiatives to reduce its environmental impact. It highlights the company's accidental environmental friendliness by design due to its focus on efficiency and proximity to users. It announces four major initiatives: commitment to carbon neutrality by 2022 with 100% renewable energy and historical carbon offsets, ramping up deployment of hyper-efficient Arm-based servers, releasing a 'Green Workers' option for Workers and Pages to run workloads in energy-efficient data centers, and working with search/crawl companies on an open standard to minimize redundant crawl traffic.
  5. Announcing Green Compute on Cloudflare WorkersIntroduces 'Green Compute' for Cloudflare Workers, allowing scheduled jobs (via Cron Triggers) to be exclusively run on edge network locations powered by renewable energy. This feature leverages Cloudflare's global network flexibility to route workloads to sustainable hardware without requiring application changes or impacting user experience. The post also highlights the broader sustainability initiatives, including the Carbon Impact Report and Green Web Foundation certification for Cloudflare Pages.
  7. Designing Edge Servers with Arm CPUs to Deliver 57% More Performance Per WattThis post details Cloudflare's significant step in energy efficiency by deploying Arm-based CPUs in their edge servers. It highlights a 57% increase in performance per watt compared to previous AMD Rome CPUs, and a substantial improvement over 2013 server generations. The post emphasizes the imperative for energy efficiency driven by their large free customer base and calls for x86 manufacturers to prioritize sustainability.
  8. Understand and reduce your carbon impact with CloudflareThis post introduces the Carbon Impact Report, a new tool for all Cloudflare accounts that outlines carbon savings from operating Internet properties on Cloudflare's network. It details the methodology for calculating these savings by comparing Cloudflare's energy usage for data transfer against average non-Cloudflare network energy usage and global average emissions. The report quantifies savings in CO2e and provides relatable comparisons, such as light bulb usage. It also reiterates Cloudflare's commitment to renewable energy and explains how using Cloudflare's services (WAF, DDoS mitigation, Image Resizing, Pages, Workers KV) contributes to reducing a customer's carbon footprint.
  9. The Climate and CloudflareThis post details Cloudflare's approach to sustainability and environmental impact, focusing on how its network architecture and platform services contribute to energy efficiency. It highlights the high utilization of its homogeneous network infrastructure, the energy savings from caching, and the efficiency gains from Cloudflare Workers' isolate technology compared to traditional operating system processes. The post also discusses the company's commitment to offsetting its remaining carbon footprint through Renewable Energy Certificates (RECs) for all global operations.