add answer about Molecule (bregman-arie#10237)

topics/ansible/README.md

@@ -509,6 +509,9 @@ If your group has 8 hosts. It will run the whole play on 4 hosts and then the sa
 
 <details>
 <summary>What is Molecule? How does it works?</summary><br><b>
+
+It's used to rapidy develop and test Ansbile roles.  Molecule can be used to test Ansible roles against a varaitey of Linux Distros at the same time.  This testing ability helps instill confidence of the automation today and as time go on while a role is maintined.  
+
 </b></details>
 
 <details>
@@ -529,4 +532,4 @@ If your group has 8 hosts. It will run the whole play on 4 hosts and then the sa
 <summary>What are collections in Ansible?</summary><br><b>
 </b></details>
 
-<!-- {% endraw %} -->
+<!-- {% endraw %} -->