The project teams are short lived and hence are more likely to be focused on delivery goals

If feature teams want to be truly independent than component teams, they may tend to rely less on reusable components.

https://www.pmi.org/disciplined-agile/lifecycle/program

It is possible that a person may take on more than one role on a Disciplined Agile team.

https://www.pmi.org/disciplined-agile/process/introduction-to-dad/people-first-roles-in-dad-introduction

A community of practice or guild is basically a group of like-minded people coming together with the purpose of learning from each other and enhancing skills.

https://www.pmi.org/learning/library/communities-practice-advancing-ways-people-together-7840

Goal diagrams represent some of the practices within Disciplined Agile.

https://www.pmi.org/disciplined-agile/process/introduction-to-dad/process-goals

https://www.pmi.org/disciplined-agile/ip-architecture/how-to-read-process-goal-diagrams

Disciplined agile is a hybrid toolkit that includes practices from multiple methods

The MBI (Minimal Business Increment) gives the team a chance to release incremental value to the business.

https://www.pmi.org/disciplined-agile/da-flex-toc/minimum-business-increments

The team may prioritize which goal diagrams are most relevant given their context

Guided continuous improvement is possible when you have a variety of options to try out with the aim of achieving an improvement goal and guidance about making the choice with a greater likelihood of success.

https://www.pmi.org/disciplined-agile/gci/guided-continuous-improvement

Psychological safety means being able to work without fear of negative consequences. Team members should be able to express themselves.

Psychological safety means being able to show and apply oneself without fear of negative consequences of status, career, or self-worth—we should be comfortable being ourselves in our work setting.

https://pmi-nl.nl/blog/creating-psychological-safety-with-disciplined-agile-a-google-case-study-5711