Costigan relocated to the country in March to assist the Avnet team there to build a solutions distribution business.
His focus was to create a global marketing and alliance program to the Indian operation.
"After spending 3.5 months living in India, I can say that I am a changed person," said Costigan.
"The original assignment was to go and work with the local Avnet India team and build a solid foundation for our solutions distribution business.
"However, after working and living in India one cannot but help be changed by the country and the people."
Avnet acquired Ontack Solutions in May 2008 and is building a business that will have all the hallmarks of an Avnet solutions distribution operation.
It has 120 staff in India in five cities; Mumbai (head office), Bangalore, Delhi, Pune and Chennai.
"One thing that hits you when you first arrive in India is the enormous amount of people that there are," said Costigan.
"India as we know has well over 1 billion people, but the real fascination is the way in which everybody gets along with each other.
"What appears as chaos to a western person i.e., the Mumbai morning traffic, is really a very civil way to move over 10 million cars, trucks, buses and auto rickshaws in less than two hours, and with little or no accidents.
"The hospitality and warmth of Indian people is another aspect that is apparent when you live in India.
"The people will go out of their way to ensure that you are made to feel welcome and that you are treated like a family member."
Costigan was living in downtown Powai and had to catch an "Auto Rickshaw" to work each morning, which would take 10 mins.
He spent the weekends watching the local Avnet cricket team play.
"Of course one cannot talk of India without talking about cricket," he said.
"I was able to enjoy the carnival like atmosphere of the ILL, and the anti climax that was the T20 world cup, the night after India were knocked out of the T20, it was like a national day of mourning, there is so much expectation on their cricketers.
"In summary, living and working in India was a challenge, but it was a experience that I will never forget."