[drtse4]

Just one question, is this "after 5 year i should be a manager" sustainable? How many managerial positions are available?

Usually these are only a small percentage of the total... and to have something to actually "manage" the manager/employee ratio must remain somewhat constant (or that "add value" become meaningless).

[psranga]

Software services companies in India grow very fast since many are they're tapping into the offshore outsourcing (or offshoring) trends.

It appears that they've been able to sustain it for the past 20 years or so. I agree it's not sustainable indefinitely.