The video discusses using authentication services like Auth0 and Amazon Cognito vs. self-implementing authentication. While faster setup is a pro for services, the speaker finds the speed advantage less compelling given their existing skills. Security is debated; while services offer expertise, the speaker isn't convinced they're vastly more secure than well-maintained open-source options. Data control and pricing are also considered, with Auth0's pricing deemed surprisingly high compared to Cognito's more affordable options. Ultimately, the speaker prioritizes flexibility and control, preferring self-implementation unless a complex auth flow necessitates a managed service.