diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -35,7 +35,8 @@ A curated list of selected readings to illustrate Scalability, Availability, and
 * [ACID and BASE](https://neo4j.com/blog/acid-vs-base-consistency-models-explained/)
 * [Blocking/Non-Blocking and Sync/Async](https://blogs.msdn.microsoft.com/csliu/2009/08/27/io-concept-blockingnon-blocking-vs-syncasync/)
 * [Why Non-Blocking?](https://techblog.bozho.net/why-non-blocking/)
-* [SQL and NoSQL](https://www.upwork.com/hiring/data/sql-vs-nosql-databases-whats-the-difference/)
+* [SQL versus NoSQL](https://www.upwork.com/hiring/data/sql-vs-nosql-databases-whats-the-difference/)
+* [SQL or NoSQL - Lesson Learned from Salesforce](https://engineering.salesforce.com/sql-or-nosql-9eaf1d92545b)
 * [Consistent Hashing - Tom White, author of 'Hadoop: the Definitive Guide'](http://www.tom-e-white.com/2007/11/consistent-hashing.html)
 * [Uniform Consistent Hashing](https://medium.com/netflix-techblog/distributing-content-to-open-connect-3e3e391d4dc9)
 * [Eventually Consistent - Werner Vogels, CTO at Amazon](https://www.allthingsdistributed.com/2008/12/eventually_consistent.html)