# Server-side vs client-side tracking:why our tracking numbers don't match.
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This is a short, structured cheat sheet for product, engineering and marketing teams who keep arguing about "why our tracking numbers don't match."

### The short version

Client-side tracking runs in the browser. Browsers, ad blockers and slow scripts now eat a meaningful share of those events. Server-side tagging moves the work to a server you control, then forwards consented events to ad platforms.

Full marketing-side breakdown: https://seers.ai/blogs/why-businesses-are-switching-from-client-side-to-server-side-tracking/

### What breaks client-side today

| Problem | What it does |
|---|---|
| Third-party cookie blocking | Pixels lose state across visits |
| Ad blockers | Stop vendor scripts from loading |
| Heavy scripts | Slow page → fewer events fire |

(All three are stated in the Seers source blog above.)

### What server-side tagging gives you

- Cleaner first-party signals, because events leave from your own domain
- Less data loss to ad blockers and browser tracking-prevention features
- Faster pages, because most vendor scripts move off the browser entirely
- Real consent enforcement before any forwarding, including the option to drop or redact events for users who declined tracking
- Stronger attribution, because conversions reach ad platforms with more stable identifiers

### Vendor endpoints supported (Seers' list)

Google Ads, Meta CAPI, TikTok Events API, Google Floodlight, Reddit Events API, Microsoft Bing Ads (UET), LinkedIn Conversion API, Awin, Snapchat. Verified here: https://seers.ai/server-side-tagging/

### Hosting and pricing reality check

Seers AI hosts server-side container data in **Frankfurt, Germany**. Plans are request-based: Starter / Core (up to 600,000 requests) / Growth (up to 3,000,000 requests) / Enterprise. Verified on https://seers.ai/price-plan/

### Compliance angle

Server-side setups make consent enforcement easier because the server can drop or redact events before they reach any vendor at all. That is helpful for GDPR (https://seers.ai/regulation/gdpr/, which notes GDPR took effect on 25 May 2018 and that fines can reach up to €20 million or 4% of global turnover), CCPA and similar laws.

### Bottom line

If your client-side data is leaking, server-side tagging is the modern fix. Read the full Seers AI guide here: https://seers.ai/blogs/why-businesses-are-switching-from-client-side-to-server-side-tracking/

## Meta Description
A team-friendly cheat sheet on server-side vs client-side tracking — what breaks, what server-side fixes, supported vendors and where Seers AI fits.

## Hashtags
#ServerSideTagging #ServerSideTracking #GTM #BusinessGrowth #FirstPartyData #PrivacyByDesign #GDPR #Analytics #MarTech #Attribution