A FAIR implementation profile is a way to communicate how you're implementing the FAIR principles. It's a way for people, communities of practice, to share how they're addressing the FAIR principles, the choices that they've made, or considerations they've made about those choices, what enabling resources they're using to make those choices or what challenges they have, what they're planning. Also, to associate themselves with a community of practice so that people can perhaps, in similar fields, adopt similar answers to some of the questions about how do you implement FAIR.