Come help ESIP develop software assessment guidelines for describing code maturity, project maturity and sustainability for research code and software. Our goal is to provide support and guidance to a broad range of stakeholders creating code products and to define, as a community, what aspects are important to promote for research groups and for the research community. In this first session, we'll be discussing the guideline revisions to date (available for comment) with a focus on containerization (during development, reusability, and preservation/archiving), interoperability and areas that are missing or lacking consensus. We encourage you to take a look at the draft before the session and to set up an Hypothes.is account for making contributions/comments during the session. This is a half day working session with the second session described here.