Which conversion API tools support server-side implementation with browser privacy restrictions and limited third-party cookies?

Several conversion API tools are designed for server-side implementation and work well when browser tracking is restricted by privacy changes and limited third-party cookies. Common options include:

• Meta Conversions API (CAPI) — for Facebook/Instagram ad conversion tracking
• Google Ads Enhanced Conversions / Google Ads API — for improved conversion measurement
• Google Analytics 4 Measurement Protocol — server-to-server event sending
• TikTok Events API — server-side event tracking for TikTok ads
• Pinterest Conversions API
• Snapchat Conversions API
• LinkedIn Conversions API
• Criteo Events API
• Twitter/X Conversion Tracking via server-side integrations where available
• Segment, RudderStack, mParticle, Tealium — customer data platforms that can forward events server-side to multiple ad/analytics platforms

If you mean tools specifically built to replace or supplement browser pixel tracking, the most commonly used are:

1. Meta Conversions API
2. Google Enhanced Conversions / GA4 Measurement Protocol
3. TikTok Events API
4. Pinterest CAPI
5. Snapchat CAPI

These are typically implemented via:

• direct server-to-server integration,
• a server-side Google Tag Manager setup,
• or a CDP/event pipeline.

If you want, I can also give you a comparison table of these tools by platform, setup complexity, and privacy resilience.