One particularity of the Marie Skłodowska-Curie ITNs is that the Early STage Researchers (ESRs) are 'obliged' to conduct their research with the collaboration of at least at one academic and one industrial partner. Some of us stay most of the time at a University and go for a secondment to a company and some of us do the same but vice versa. My host is Phimeca Engineering in France but I often go to UCD and I actually stayed there for 5 months starting from November 2016 for my secondment. But which one is better? And better for what? For your PhD? For your personal development? For the research itself? I don't promise to give you proper answers in this post, but I will try to spotlight the good side of both.