I hoped this would be about GDS. My first job was in that sector. I learned a lot during that time. It was an enormous c++ codebase (as I remember it, million

I hoped this would be about GDS. My first job was in that sector. I learned a lot during that time. It was an enormous c++ codebase (as I remember it, millions of lines) and as much as I profoundly disliked some aspects of it, there were also a lot of interesting things. IIRC they had a pretty large platform team maintaining their own compiler and eclipse plugin. One aspect of pricing (and availability, just because there are free seats on a plane does not mean they are available to you) that is not touched in that article is not multi legged flights are almost all the time deeply favored by the algorithm. So if you absolutely NEED to go somewhere but the website shows zero availability, try to search for a multi leg trip including your intended destination.