Piazza's New Licensing Model
Piazza announced that they changed their licensing model and that payment would be required to use Piazza's premium features such as,
You can still use Piazza's basic features for free in your course. For more information or specific questions, contact firstname.lastname@example.org.
You can read Piazza's announcement at:
Depending on the instructional need, Microsoft Teams might be a viable solution that won't require additional fees because of JHU's existing license with Microsoft. The following document expresses the functional comparison between the two programs with considerations.
Piazza vs Teams Comparison (PDF)