Rephrase NAME_1, use language best for the website of company which offers devops services. 
In software companies or departments people salaries are one of the biggest cost, just behind infrastructure. 
One of the most common bottlenecks in a application delivery process is feature testing on certain application version 1, those kinds of tests takes most of the time. That’s why they could block test environments for a while, we can not deploy another application version with other features till the previous tests are completed. 

Lets take a look at below diagram to understand, better where is the bottleneck. 
 Write exactly 5 paragraphs each separated with two new lines answering this question. The first paragraph must start with "however".
user