TestingSaaS

Green IT vs. Sustainable IT
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Green or sustainable IT?
Green or sustainable IT? 1024 1024 Cordny

Last week I had a great meetup with like-minded people about IT and getting it more greener.
Members from the Green Software Foundation and Sustainable IT Netherlands communities together.
Passion for technology converged with a shared commitment to sustainability.
That evening something was lingering in my mind, but I could not grasp it.
A few days later it struck me:

Green IT is not equal to Sustainable IT

Let me explain.

Why is Green IT not equal to Sustainable IT?

Green IT and sustainable IT, both terms are used frequently on social media, especially on LinkedIn, when promoting the use of IT measures against climate change. We use them interchangeably without even knowing it. But they are not the same.
We first have to see what these terms mean seperately.

What is Green IT?

In my honest opinion, Green IT, as also stated by the Green Software Foundation (GSF) is software that is responsible for emitting fewer greenhouse gases like CO2. So, less CO2, less energy, less waste etc.
It’s a tech thing, trying to solve a prblem quick, result driven.
But what’s then the difference with Sustainable IT?

What is Sustainable IT?

Sustainable IT refers to the design, manufacture, use, and disposal of IT systems and infrastructure with minimal negative impact on the environment, while also being socially responsible and economically viable.
The last part of this definition shows the difference with Green IT: while also being socially responsible and economically viable. Let me explain this further.

The difference between Green IT and Sustainable IT?

Sustainable IT is not only about IT, it involves also the social interaction. It’s a process, get IT sustainable.
How? By implementing processes, not only involving IT pro’s, but other people too.
And processes take time, it’s not a quick fix, it needs commitment. It is slower.
And it also affects the economy. How can we build solutions for sustainable IT that lasts a long time?

In other words, Green IT is a part of Sustainable IT.

What is the role of TestingSaaS here?

TestingSaaS has a green mission: help to reduce the emission of green house gases by IT.
With his knowledge of software testing, documentation, and green IT Cordny Nederkoorn
helps Small and Medium-sized Enterprises get their software testing and document creation greener, so they can create sutainable products.
Not only green IT, but also sustainable IT, by creating awareness at these companies and clients.

Would you like to discover what TestingSaaS can do for your organization?

📅 Schedule a free exploratory call via
https://lnkd.in/eAXUVjBS

or send me a direct message.

Let’s build sustainable IT together, for a lasting world!!









TestingSaaS goes green IT
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TestingSaaS on a new mission: a green mission!
TestingSaaS on a new mission: a green mission! 502 356 Cordny

Remember I said it was time for some experiments?

Well, they started.

TestingSaaS goes green IT, just like its logo.

It started with a spark, erupting into a flame and last Wednesday a flow started to spread.

How did this happen?

The spark which erupted the flame: a book called Green IT

A few months ago I was walking through my favorite bookshop in Oss like Ernest Hemingway did a hundred years ago in the famous bookshop Shakespeare and Company in Paris. I always relax here, just browsing through books. Then I saw a book called Green IT by Jan Hoogstra and Eric Consten.

While reading the cover I got intrigued and I bought it. Yeah, the current IT (especially AI) is having a problematic impact on the climate. And this book gives , next to some theory, also practical examples how to decrease this impact. Software, hardware, networks, data centers and utilities, they all can help this do it. Companies and organisations like TNO, AFAS and the government are doing it.

This got me thinking, how could I help with my company?
Not only by getting more sustainable with my company, but also more as a real player in this new field.

A spark became a flame.

Then I met Wilco Burggraaf on LinkedIN.

The flow: Meeting the people from Sustainable IT Netherlands and the Green Software Foundation

Following Wilco, the Dutch Green Software Champion, expanded my network in Green IT, with people like Robert Keus, a social entrepreneur revolutionizing the way technology intersects with society. And developing a  first green AI chat, reducing the impact AI has on our environment by running on sustainable infrastructure and by repurposing heat. Chatbots eeh, where did I do that before ?


Man, I had to meet these people, but how? As an entrepreneur I’m also quite busy.
Let’s see if there are meetups where they are involved, and yes, there are.

One of them was last Wednesday, the 28th of May 2025.  A meetup from Green Software Foundation and Sustainable IT Netherlands communities, where passion for technology converges with a shared commitment to sustainability.
Hosted by Thorsten Picard at Capgemini HQ Utrecht.
This was the time to get that flow going!

The Green IT flow

The evening was wonderful. I finally met Wilco and Robert and a lot of other people, a real organic gathering.

I heard about the ‘Green Software Foundation’, and I was very happy to also meet people from ‘Sustainable IT Netherlands’. Corina Milosoiu and Chris Stapper, very delighted to have met you.

But a meetup is not a meetup when there are no talks.

Robert kicked it of, together with Cas Burggraaf, an energetic and eye-opening session, which proved that a talk about GenAI can be about so much more than just numbers and figures.

Then the stage was ready for a lighthearted talk by Mirko van der Maat from Capgemini about Sustainability in Architecture and Barbapapa. Oh man, Barbapapa, forgotten memories.

At the end it was time for some pitches, which were received very well.

But hey, what is a meetup without some drinks and snacks, very well facilitaded by our host?

Time for some networking. Great talks with very passionate people with one thing in common: Green IT!

TestingSaaS going green: the future?

Ok, we had a spark that erupted in a flame, becoming a flow.

Well, I want a good Aussie bush fire, I want to create a flood.

Yes, I remember your books Rijn Vogelaar.

And I can’t do it alone.

With my new friends from the Green Software Foundation and Sustainable IT Netherlands communities I can.

How? By Creating Content through Testing!

To be continued!!

picture of Tom Cruise in a fighterjet in movie Top Gun
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Testing like Top Gun?
Testing like Top Gun? 1549 874 Cordny

Testing like Top Gun

A few years ago I was asked to help a crack remote IT-team from Nagarro (India) to help them with their software testing and quality assurance.
Their assignment then was to create plugins (interfaces) between the client’s marketing Platform (PaaS) and 3rd parties like Microsoft Azure , Google cloud platform and other platforms like Snowflake etc.
There was one catch, little documentation was available and we did not have a dedicated PO (later we got a great one!) and the situation could change by the day.
So, what do you do as a tester then?

source:  https://www.looper.com/831839/the-suprising-reason-top-gun-maverick-shot-a-jaw-dropping-amount-of-footage/

Introducing the OODA loop

Well, about 10 years ago a buddy of mine (and great coach) told me about the OODA loop, a decision-model created and used for making decisions quickly.
It was developed by a US Airforce Colonel, John Boyd, for use in air combat where situations change by the second. Remember Top Gun and its great sequel Top Gun: Maverick ?

How I use the OODA loop with software testing

OODA is an acronym for Observe, Orient, Decide and Act.
My first step was to oversee the situation (Observe) and filter the things necessary for my tests. These things I had to combine (Orient) and create the best fitted tests for the product and the current situation (Decide)
And then the testing started (Act).
But what if things changed?
Well, that’s why it is called a loop, and you can start again from the beginning at Observe.
All in a fast and agile way.
Doing this we created interfaces in a fast way and we were always aware of the constraints and possible risks. As a team, not a bunch of individuals!

Alas, after a while the management team wanted to align us with the other teams and with the company’s processes.
Which is understandable because the company became more a scale up.

But, what a time.
It shouldn’t be a surprise I use the same OODA loop for my clients at TestingSaaS.

Always a maverick at TestingSaaS, always a step further, sometimes in the danger zone, but then the OODA-loop helps.
See you in the air, I mean cyberspace….

a bloch sphere visualization of a qubit
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Quantum computing, Cordny, are you mad?
Quantum computing, Cordny, are you mad? 776 773 Cordny

Quantum computing, Cordny, are you mad?

This question I got last week from a peer after I announced on LinkedIn I wanted to dive into quantum computing.

Yeah buddy, quantum computing, QC for short.

On high school I wasn’t a physics fan, but I was always fascinated by atoms and its protons, electrons etc.
Regarding mathematics, geometry I hated, but algebra I was more interested in. Even during my biology study theoretical biology attracted me, but zoölogie was always my keen interest, so I graduated in microbiology and bio-informatics. Recognize the interest in micro?
Durig my testing career my curiosity in how things work at the smallest level continued and I also got more experienced in cloud computing (see my blogs and articles)
And then a few months ago a colleague of mine talked about QC and I thought, seeing the possibilities of cloud computing, combined with QC, thank you Quantum Delta NL, why not give it a shot in 2024? Let’s test it out and create content, or better said: Create Content through Testing. Just like I did for identiverse (UMA!!!!!) and the metaverse startups (Fectar ???? )

A bloch sphere visualization of a qubit, created with Python



It’s a kind of deja vu I now have, the curiosity and implementing it, just like I had more than 10 years ago with IAM (identity and access management) and UMA (yeah Eve Maler !)
I do not expect to be a pro at QC, but with my company TestingSaaS I will explore the landscape, test the software in the cloud, talk to the quantum computing experts, and I will write about it. Yes, using all my skills.
One step at a time, or better said 1 Qubit at a time :-).

To be continued!!

PS: I must be crazy, but I like it!

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