diff --git a/docs/introduction/test-classification.md b/docs/introduction/test-classification.md
index 695ae34..3a91ea1 100644
--- a/docs/introduction/test-classification.md
+++ b/docs/introduction/test-classification.md
@@ -9,4 +9,8 @@
 
 ## Contract Test
 * [What is contract testing and why should I try it?](https://pactflow.io/blog/what-is-contract-testing/)
-* [ContractTest](https://martinfowler.com/bliki/ContractTest.html)
\ No newline at end of file
+* [ContractTest](https://martinfowler.com/bliki/ContractTest.html)
+
+
+### Test Environments
+* [Using a Shared, Centrally Managed QA Environment vs. an Individual Environment: Benefits, Drawbacks, and Personal Experience (https://www.stickyminds.com/article/using-shared-centrally-managed-qa-environment-vs-individual-environment-benefits-drawbacks)