Given the rapidly changing scenario of the global IT industry and competition intensifying,it would be challenging for a company like Infosys to lose time in such management transition. Infosys also faces serious competition from Nasdaq-listed Cognizant,which has overtaken it in terms of dollar revenue growth. Sources said any external candidate will also have to deal with a strong personality like executive chairman NR Narayana Murthy ,who has an iconic status in the Indian IT industry.