Format

Hi Niklas, and welcome to the community! At first glance, both options seem to have some good strengths and minor weaknesses.

The vertical version seems fantastic for creating a resource that people can quickly scan to see what's included and easily revisit when they need to look up a specific detail. It's also structured like a lot of product information websites, so it's a format people would find familiar for this kind of information. But it's also a design that makes it easy to skip sections of content. That's helpful for a resource you anticipate learners revisiting but more of a challenge if you're hoping they'll learn all the details in one visit. And it's not a format that makes you anticipate a quiz, so I wouldn't be surprised if some learners missed that part. If the quiz is just a personal knowledge check, that's less of an issue. But if you need all learners to complete it, it could easily get missed by accident.

The more traditional slide format has its strengths too. Because it's more linear, it's easier for you to choose how to guide learners through information. That's helpful if your content makes the most sense if you view it in one specific order. And it also helps if you have a legal requirement that all the information is viewed (with the reminder that just because someone viewed content doesn't mean they actually learned it). The slide experience also makes the quiz harder for learners to miss and more likely for them to anticipate seeing. So if the quiz is vital, this helps it stand out. But this format does make it harder to skim the contents or quickly revisit to look up information later. So it doesn't work as well as a regularly-revisited resource compared to the vertical scroll option.

On the plus side, neither of your two options are bad. It's just a matter of using your learning goals and your learners' expectations to guide you toward the best option for this project.