Full Answer

GDPR's core requirements don't change with server-side tracking: lawful basis, transparency, and data minimization still apply. But server-side architecture gives you tools that browser-based tracking cannot. With a first-party server, you can enforce consent server-side — only routing events to ad platforms when consent is confirmed, rather than relying on browser scripts that fire before consent checks complete. You can hash PII (email, phone) with SHA256 before it leaves your server, reducing the personal data sent to advertising platforms. You can also eliminate third-party scripts from your site entirely, which reduces your GDPR exposure surface. The GDPR advantage of server-side isn't compliance by default — it's controllability: you decide exactly what data leaves your infrastructure and where it goes.