I'm new to Selenium and web UI automation. I was wondering if most folks who have used Selenium, whether in .NET environment or not, had to deal with automation complexities and infrastructure setup as mentioned in the following blog articles, or have you done simpler automation instead. What have you done that is similar or different than what is mentioned in the posts.

Just wanted an assessment on how Selenium is used in the field as well as how much work we have to do in our company/department for new UI automation with Selenium.

Master summary of Selenium automation + complexities & infrastructure setup

This was the starting article of the summary