How To Set Custom Attribution Windows
Why the default attribution window may not fit your store, especially in beauty, fashion or supplements, and how to choose a window length from your own purchase cycles.
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By Joris van Huët, Founder & CEOUpdated 1 min read
Run the numbers for your store: the free attribution window calculator.
Introduction
Setting custom attribution windows tailors your marketing analysis to the typical customer journey length, ensuring that channel impact reflects realistic conversion timelines.
Why Customize Attribution Windows?
The default 7-day or 30-day windows may not fit all Shopify brands, especially in beauty, fashion, or supplements where consideration periods vary. Custom windows:
Capture true timeframes of influence.
Avoid misattributing conversions outside relevant periods.
Improve incremental impact precision.
Best Practices
Analyze historical purchase cycles to define (W).
Test multiple window lengths and compare incremental lift results.
Align windows with campaign types and channel behavior.
Conclusion
Custom attribution windows ensure your causal attribution matches your brand's unique sales funnel timing.
Frequently asked questions
How does the window affect incremental lift calculation?
Shorter windows focus on immediate effects; longer windows capture delayed conversions, impacting causal estimates.Can I change the window after running analysis?
Yes, but you must rerun the analysis to see updated attribution results.Does setting a longer window increase noise?
Potentially, as more user interactions dilute signal; Bayesian methods mitigate this but choose windows carefully.
Go deeper: Causal attribution, explained.
Sixty-second versions of these ideas: Causality Engine on YouTube Shorts.
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Terms in this article
- AttributionAttribution identifies user actions that contribute to a desired outcome and assigns value to each. It reveals which marketing touchpoints drive conversions.
- Attribution WindowAttribution Window is the defined period after a user interacts with a marketing touchpoint, during which a conversion can be credited to that ad. It sets the timeframe for assigning conversion credit.
- Causal AttributionCausal Attribution uses causal inference to determine which marketing touchpoints genuinely cause conversions, not just correlate with them.
- ConversionConversion is a specific, desired action a user takes in response to a marketing message, such as a purchase or a sign-up.
- Customer journeyCustomer journey is the path and sequence of interactions customers have with a website. Customers use multiple devices and channels, making a consistent experience important.
- ShopifyShopify is an ecommerce platform for creating online stores and selling products. Attribution modeling shows which marketing channels drive traffic and conversions within Shopify.