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April 24, 2026 by Scott Seong

What are the differences between Google Enhanced Conversions for Leads vs. Offline Conversion Tracking?

EC4L vs OCT

These two features solve the same fundamental problem — lead gen advertisers can't see what happens after someone fills out a form — but they use different mechanisms to do it. Think of Offline Conversion Tracking (OCT) as the original solution, and Enhanced Conversions for Leads (EC4L) as its upgraded replacement. Google itself now recommends that if you al...