In The Alan Turing Institute they are reviewing the funding of MLJ and they are asking for evidence that MLJ is being used, filling a need and having an impact. In order for the project to continue seeing support, they need testimonials on this thread from the official Slack channel.
If you can include something about the domain of application you are using MLJ for, it would also be really helpful. Feel free to say for what institute organization you are working for too.