The talk is centered around sustaining free and open-source software (FOSS) projects. The speaker discusses three lenses through which sustainability can be achieved: community, financial, and technical practices. In the community lens, the speaker emphasizes the importance of succession planning and mentorship to ensure the longevity of projects. In the financial lens, the speaker suggests various models, such as tips and donations, getting hired at a company for open-source work, and companies themselves doing open-source work. Finally, in the technical lens, the speaker advocates for documentation, testing, CI/CD, and cloud development environments to make projects easy to use and contribute to. The speaker also highlights the importance of supporting maintainers and the need for new models to sustain open-source projects.