There is a new post called Acrobat DC: The Creative’s New Best Friend in the Adobe blog. It’s all about the new features in Acrobat DC 2019 which allow a digital collaboration workflow with colleagues and customers. This is supported by the new possibility to import PDF annotations into an InDesign document.
The post is based on an interesting (and entertaining) tutorial by Patti Sokol, Senior Solutions Consultant at Adobe, and Keith Gilbert, Gilbert Consulting, with the title(70 minutes) at Adobe MAX 2018:
In this tutorial they demonstrate who everybody without Acrobat/Reader and without signing into Document Cloud can add annotations to a PDF by just using a web browser.