diff --git a/README.md b/README.md
index 6b64773..f8e6d38 100644
--- a/README.md
+++ b/README.md
@@ -804,6 +804,7 @@ An updated and organized reading list for illustrating the patterns of scalable,
 	* [Moderating Promotional Spam and Inappropriate Content in Photos at Scale at Yelp](https://engineeringblog.yelp.com/2021/05/moderating-promotional-spam-and-inappropriate-content-in-photos-at-scale-at-yelp.html)
 	* [Optimizing Payments with Machine Learning at Dropbox](https://dropbox.tech/machine-learning/optimizing-payments-with-machine-learning)
 	* [Scaling Media Machine Learning at Netflix](https://netflixtechblog.com/scaling-media-machine-learning-at-netflix-f19b400243)
+	* [Similarity Engine at eBay](https://tech.ebayinc.com/engineering/ebays-blazingly-fast-billion-scale-vector-similarity-engine/)
 
 ## Architecture
 * [Tech Stack at Medium](https://medium.engineering/the-stack-that-helped-medium-drive-2-6-millennia-of-reading-time-e56801f7c492)