Quick start with selenium

Q: What's selenium and why software industries use this tool.

Ans: Selenium is a web automation tool and a group of API's which provides a capability to automate different web browsers suite at a time like chrome, firefox, safari, and internet explorer.
There are various paid tools are available in the market but IT industries prefer selenium because of.

1-Open Source
2-Different language bindings support (java,ruby,Perl,node,c#,python) etc
3-Cross-platform

Selenium Suite Overview:

Selenium suite comprises four different components likes

1-Selenium IDE 
2-Selenium RC (deprecated)
3-Selenium WebDriver
4-Selenium Grid (Selenium Server) 

In my upcoming blog post, I will discuss on Selenium IDE, Selenium WebDriver and Selenium Server in more depth.