You're working for a pet supply business, and you need to measure how many clients who first saw your ad on a tablet ended up purchasing pet supplies from their laptop computers. What measurement type could you use?

Cross-environment conversions track user actions across different devices or environments (e.g., seeing an ad on a tablet and converting on a laptop). This is crucial for understanding the full customer journey in today's multi-device world. Conversion tracking is a general term for measuring conversions, but "cross-environment" specifically addresses the scenario described. Same-device measurement would only track conversions on the same device where the ad was seen, which doesn't fit the question. The Open Measurement SDK is used for verifying ad viewability and measurement, not for tracking cross-device conversions.