I first began automating PowerPoint presentation slides in 1999. Back then, for one, you had to use stacks of paper with myriads of numbers that one could type into the computer.
While working on this, I had time enough to think about the main challenges it brought up in visualizing it as follows. The more difficult the automation is, the more detailed the presentation would be.

As is today, simple bar graphs are rarely used. Because PowerPoint has grown to be more user-friendly, which also allows complex statistical statements to transform easier into good graphics, it also means the automation is going to cost more and more effort.

After having met the realms of macros and scripts, we then decided as a team to try to carry out a web-based solution in PHP. Unfortunately, this all-in-one solution could neither withstand the topic’s sophistication nor could it compete against the world’s financial crisis of 2008. Nonetheless, we had crafted a suite that could do online questioning, evaluation and export to PowerPoint on a single platform. That was simply too much.

Since 2010, I’ve been working as a freelancer on a software that is not open to the public. This software focuses on the automation of PowerPoint. Due to the fact that this project is coming to an end, I have dared to take a new, fresh start in a modern surrounding with an open-source project called pptx-automizer. The world's open-source ideas and thoughts have helped me a great deal through the years and I encourage everyone to take part in this.

If your company spends too much time for data visualization in PowerPoint, this is the right project to invest. Two decades of experience are now going to be concentrated into a single and open-source project.