You can visit https://delphicon.embarcadero.com/ to replay the sessions of the conference, including my keynote (which had more attendees than the conference software could handle) titled "Keynote: Beyond 10x - The Future of Development with Delphi"
All other great sessions on many different Delphi topics are also available for replay and I really recommend you check out that valuable content Delphi MVPs and other great speakers prepared for the conference.