A very interesting article and approach!
https://www.howwemadeitinafrica.com/vertical-farming-ugandan-company-develops-solution-for-urban-agriculture/91900/

Evident changes!
When I started my PhD back in 2016 the Net was very poor in VF information that I could not find more than 10 scientific papers in regard. Google Trend shows the VF interest growth very clearly. In the last 10 years a new sector is born and is exponentially grown.