What TS 20125 actually names: the codecs, formats, and settings behind 'efficient implementation'
August 17, 2026 · Luís Cruz
ISO standards are usually written to stay technology-neutral for a decade. ISO/IEC TS 20125-1:2026 briefly stops being neutral: it names WebP, AVIF, VP9, HEVC, AV1, Opus, and specific compression settings. Here's where that concreteness lives in the Implementation phase, and why it shouldn't be read as permanent technical advice.
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Bundling, lazy loading, and the best practices that don't always apply
August 10, 2026 · Luís Cruz
Bundle your JS to cut requests. Lazy load everything below the fold. Both are true, until they aren't. A look at why sustainability and performance advice needs conditions attached, not just rules, and how ISO/IEC TS 20125-1:2026 gets this more right than most checklists.
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What TS 20125 Actually Asks of Requirements Gathering and End of Life
August 03, 2026 · Luís Cruz
Requirements gathering and end of life are two ISO/IEC TS 20125-1:2026 phases organizations consistently struggle to show real accountability for. Here's why that's an organizational gap, not a product one, and what GSP™ Level 2 now requires because of it.
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ISO/IEC TS 20125: The New International Specification for Digital Services Ecodesign
June 25, 2026 · Luís Cruz
ISO/IEC TS 20125-1:2026 is the first ISO/IEC technical specification for digital services ecodesign. Here's what it is, why it matters, and what organisations need to do about it.
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RGESN and GSP™: Two Different Answers to the Same Question
March 03, 2026 · Luís Cruz
RGESN and GSP™ are often mentioned in the same breath. They are not the same thing and understanding the difference matters if you are serious about sustainable software engineering.
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Your ESG Report Won't Fix Your Code: Why Software Products Need More Than Just a Sustainability Badge
February 20, 2026 · Luís Cruz
B Corp, ISO 14001, SBTi — these certifications audit your company. They don't make your code more efficient. Here's where Green Software Practices™ fits in the sustainability stack.
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Your GHG Report is Lying to You: Why Carbon Accounting is Failing Software Engineering
February 13, 2026 · Luís Cruz
Your carbon-neutral badge looks great. But if your code is inefficient, you're just wasting someone else's renewable energy. Why GHG reporting creates a dangerous blind spot for software teams.
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Will the AI act make AI green?
February 06, 2026 · Luís Cruz
The EU AI Act enters full application in 2026 and includes sustainability provisions for AI systems. We examine what it actually requires — and whether it will make AI any greener.
Read more →What no one is telling you about measuring energy of software.
January 20, 2026 · Luís Cruz
Measuring software energy consumption is harder than it sounds — and most teams aren't doing it. Here's why it matters and what makes it so difficult to get right.
Read more →Why do we need GSP™ when we have Blauer Engel?
January 09, 2026 · Luís Cruz
Germany's Blauer Engel eco-label now certifies software products. Here's what it covers, where it falls short, and why GSP™ goes further for teams serious about energy efficiency.
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