Similarity between Beggers Vs Software Professionals

A beggar meets another beggar.
A software engineer Meets another software engineer.
Both of them ask the same question to each other.

What is the question???
.
.
.
.
.
.
.
.
.
..
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Q : So, Which Platform are you Working on ???....