Developers should prioritize SEO to boost visibility, traffic, and competitive advantage while enhancing UX more cost-effectively than ads. Start with keyword research, on-page optimization, quality content, and technical SEO (speed, mobile, SSL). Avoid keyword stuffing, duplicate content, and slow pages. A travel-site example shows how headers, meta, images, and internal links improve rankings—integrate SEO into your dev workflow.
To implement OAuth with Google and Facebook in Node.js, create a project in the Google Cloud Console and enable the Google Sign-In API. For Facebook, create an account on Facebook for Developers and configure API settings. Use libraries like `passport-google-oauth20` and `passport-facebook` to handle authentication, ensure HTTPS encryption, error handling, and sensitive credential storage for security.
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