Sunny Tech, a conference covering a broad range of topics such as Cloud and Devops, Methodologies, Backend, Data, Web and Mobile and UI, Architecture, and Atypical, was held in Montpellier from June 30 to July 1. The organizers created an excellent schedule, offering a diverse selection of talks and workshops that catered to different interests and backgrounds. Attendees had the opportunity to attend various formats of talks, including 50-minute presentations, workshops of varying lengths, and short 20-minute talks. For those interested, the program is still available on the site.

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Figure 1: Sunny tech 2022 by Melowski

The organization

Before talking about my favourite discoveries of Sunny Tech, I would like to thank all the volunteers who made this event possible after several years of absence due to Covid. You don’t realize it as a participant, but a titanic organization is necessary to set up a conference of this quality!

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Figure 2: Many thanks to the organizers (image taken by @ponceto91)

I would also like to highlight all the actions for the environment that were implemented, such as:

  • the possibility of not taking goodies and in exchange giving the amount of these objects to an association
  • a special booth for a local association. This year we were able to meet LabelBleu
  • a 0-waste caterer who uses only reusable containers such as glass jars (and the food was very good, thanks to Instant bocal)
Figure 3: Yum!

I will now present to you my favourites of this conference! If you ever want to have more information than my summary, all the talks have been filmed and will be published soon. I will update the article once all the presentations are online with the link to find them.

Favorites at Sunny Tech

“Numérique et éthique : l’impossible équation ? (Digital and ethics: the impossible equation?)”

This alarming but important subject was presented by Audrey Neveu and Agnès Crepet. This presentation is divided into two main areas. On the one hand, the resources necessary for our entire digital life and on the other hand, the ethical questions that arise with new technologies.

Figure 4: Keynote

The duo is exciting, and their areas of expertise complement each other perfectly. I will not dwell on these problems that are well known, but on the solutions proposed by the speakers in order to stay on a positive note!

To begin with, regarding our privacy and interactions on Internet, companies should focus on 4 pillars:

  1. The right to transparency
  2. The right to a clean design
  3. The right to privacy
  4. The Right to leave

The right to a clean design means that the solution does not use dark patterns (see definition below) to deceive users.

A dark pattern (also known as an anti-pattern or “Deceptive Design”) is a user interface that has been carefully crafted to trick users into doing things.

Concerning the ecological impact of all our devices, several solutions are also possible:

  1. Rent instead of buying, on Commown for example
  2. Use a responsible operator like Telecoop
  3. Use a respectful operating system like e
  4. Keep your devices as long as possible instead of constantly buying to the latest fashionable product
  5. Favoring easily repairable devices, the repairability index can help you to see more clearly. The French government has created a platform for that too:

To sum up, there are many things to improve, but solutions exist and we are the first actors to be able to change things.

Thanks again to the two speakers for raising awareness on this important subject!

“Comment j’ai développé le détecteur de deepfakes le plus puissant du monde pour 100€” (How I developed the world’s most powerful deep fakes detector for 100€)

Mathis Hammel presented us his home-made solution to detect deep fakes. The site thispersondoesnotexist generates fake faces for free.

Fake face recovered from thispersondoesnotexist
Figure 5: Fake face recovered from thispersondoesnotexist

Ill-intentioned individuals use these services to create fake profiles en masse on social networks. To remedy this, Mathis created a solution to detect them from scratch.

Summary of the presentation by @ptibulle
Figure 6: Summary of the presentation by @ptibulle

The speaker started his reflection with a simple but effective solution. Before explaining it, we need to go back to the methods used to realize this AI.

The artificial intelligence technique used to generate the images is a GAN (Generative adversarial network). This type of model is based on three parts:

  1. a generator that will produce random images at the beginning and then more and more realistic as you train
  2. a bank of real images
  3. a discriminator that will have to detect if the image presented to it comes from the generator or from the image bank

The goal of the generator is to produce the most realistic image possible to deceive the discriminator and the goal of the discriminator is to detect as well as possible the false images generated. After many training cycles, the two modules will improve and become more and more efficient.

The first trick to detect false images generated by this model comes from the image bank used. Indeed, the faces coming from this group of photos have a particularity: the eyes are always placed in the same place. Therefore, the AI will try to create images as close as possible to the real ones and will therefore also place the eyes in the same place. The most naive solution is to look at the position of the eyes on the image and if it matches the known position, the image is false. But this solution is not very robust to changes in the pictures, so the presenter developed a more advanced method.

To do this, it has set up a service that retrieves and stores images from the site thispersondoesnotexist. It has made several optimizations in order not to store the raw images on the server, as this would take up too much disk space. Then, when you want to detect a fake face, the tool will compare with its database and according to a score, send back yes or no. If you want to test, Mathis hosts a website allowing to detect fake images directly from the browser. Moreover, this website displays interesting information such as look-alikes, when the fake image was generated, or the eyes technique explained before.

“Il était une fois… les navigateurs” (Once upon a time… the browsers)

Noël Macé and Pierre Tibulle presented us an interesting subject with a very original presentation! Indeed, while Noël explained the origins of browsers and their evolution through time, Pierre drew the slides in real time on the stage.

Once upon a time... the browsers
Figure 7: Once upon a time... the browsers

I really admire the people who manage to go out of the frame to present their subject, a big bravo to them!

By the way, Pierre has posted on his twitter feed several summaries of talks he participated in (like the one about deep fakes).

“Mais, à quoi ça sert un DevRel ?” (But, what is a DevRel for?)

We had the privilege to receive two unicorns on stage to explain us the job of DevRel (Developer Relations).

But, what is a DevRel for?
Figure 8: But, what is a DevRel for?

I really enjoyed this talk because the term DevRel was obscure to me. I imagined a person who goes from conference to conference to sell their company. But after this humorous presentation, you realize that this is only the tip of the iceberg. This illustration by @manekinekko shows the submerged part of the iceberg.

The developer advocate iceberg by @manekinekko?
Figure 9: The developer advocate iceberg by @manekinekko

Among all these missions, there are several that I would never have imagined:

  • Gather feedback directly from users and pass it on to the corresponding departments of the company
  • Discuss with the marketing department to highlight the features that are really important to the end user
  • Coaching internal teams to help them prepare a talk for example
  • Test the products in preview to verify that the use is pleasant and suits the habits of the users
  • Create documentation
  • etc.

The list is long and that’s why summarizing this job in a few lines is complicated.

There are also several points that are important in the vision of a *DevRel/:

  • tech people talking about tech. In other words, a DevRel has practiced, coded and tested a solution before presenting it
  • be sincere, i.e., don’t give a sales pitch with no substance only in order to sell but a sincere pitch thanks to their experiences

I urge you to watch the replay of this moment to learn more! The slides are available here.

“Éclater ses collègues à Mario Kart” (Blast your colleagues at Mario Kart)

This offbeat talk presented by Yann Bertrand explains a multitude of techniques to avoid finishing last in Mario Kart! I think it’s great that this fan of video games and e-sports competitions can come and talk about his passion in a conference like Sunny Tech.

For Mario Kart Deluxe 8 players, here are the main techniques I didn’t know:

  • If you have a piece as a main object, keep it because the next object will necessarily be a protection object
  • When a red carapace comes on you, you can enter a wall at the last moment to avoid it
  • To avoid a blue carapace, you can use a mushroom when the carapace falls on you

Afterwards, Yann showed us several advanced methods, but to be honest, I don’t think I’ll ever be able to reproduce them…

The weekend after the conference was an opportunity to test out all of his techniques and to my surprise, I really improved! Considering my initial level, I had a lot of room for improvement… If you’re a Mario Kart player on Nintendo Switch, I highly recommend watching this talk a few times!

“Camping Paradigme : Organise tes vacances en mode Agile !” (Camping Paradigm: Organize your vacations in Agile mode!)

Laurie Coquillat imagined and created a board game to explain Agile methods in a playful way.

Camping Paradigm: Organize your vacations in Agile mode!
Figure 10: Camping Paradigm: Organize your vacations in Agile mode!

In this workshop, you had to organize your group vacation with unforeseen events and constraints in the best possible way. This parallel with an IT project allows participants to discover the world of agility in an original way.

The game board
Figure 11: The game board

There are several points to take into account during our adventure such as the mode of transport used, the activities, the meals or the chosen accommodation. During the game, you may come across some unexpected situations that you have to deal with as a group.

Laurie was present throughout the game to guide and help us. At the end of the game, she highlighted the parallels with our IT projects to explain the different Agile frameworks and their use cases.

I highly recommend that you attend if you are going to a conference where Laurie is presenting this workshop. Even if you work with the Agile mindset on a daily basis, this workshop allows you to rediscover the basics and the interest of these methods in a fun way!

Thanks Sunny Tech!

It was my first time at Sunny Tech and certainly not the last!

The tickets for the conference are really reasonably priced (90 euros for both days if you book at the last minute) with a neat organization and great volunteers! Don’t hesitate to suggest topics for next year or to participate in the organization because they need volunteers to make this event possible.

Thanks again to everyone and see you next year in sunny Montpellier!

Thanks Sunny Tech by Melowski
Figure 12: Thanks Sunny Tech by Melowski

I would also like to thank Melowski who made the two illustrations with the pink flamingos especially for this article!