The metropolis of Mumbai, formerly known as Bombay, is India's commercial capital. It is also the home of "Bollywood" - India's popular film and television industry. Mumbai attracts migrants from all over India and South Asia. According to a study cited in Wikipedia, 45-48% of the population of Mumbai lives in shanty towns and slums.
"...the aspiration of turning Mumbai into Shanghai or Singapore has at least temporarily been put on hold...This reality check was long overdue. Mumbai's problems are significantly different from those of Shanghai or Singapore...[It faces the] problem of relentless migration...The key to Mumbai's revival as an urban centre lies in taking this population pressure off the main city by creating an alternative centre of economic activity."
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