Should I track client-side or server-side?

It depends on what matters most to your business.

**Track client-side** if you want rich, detailed user interaction data and don't want to spend engineering effort on setup. You'll get real-time insights into clicks, page views, and user behavior out of the box. The tradeoff: you could lose up to 20% of your data to ad blockers and privacy tools.

**Track server-side** if data accuracy and site performance are your priority. You'll avoid ad-blocker data loss entirely and improve loading times, but you won't capture client-side metadata like UTM parameters or browser info without extra work.

**Go hybrid** if you want both. Track your core events-signups, purchases, activations-server-side to keep your heartbeat metrics reliable, then track everything else client-side. You'll preserve behavioral insights while ensuring you don't miss entire user segments. This is more complex to set up, but it's the best balance.