Instagram: Kevin Systrom & Mike Krieger Kevin Systrom and Mike Krieger launched their photo-sharing app with a server that crashed every other hour. Despite a chaotic start, Instagram became one of the most popular apps in the world.

Instagram: Kevin Systrom & Mike Krieger

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Instagram: Kevin Systrom & Mike Krieger 29:55

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How I Built This with Guy Raz

Instagram: Kevin Systrom & Mike Krieger

NPR

Instagram: Kevin Systrom & Mike Krieger

Listen · 29:55 29:55

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September 19, 201612:01 AM ET

Kevin Systrom and Mike Krieger launched their photo-sharing app with a server that crashed every other hour. Despite a chaotic start, Instagram became one of the most popular apps in the world.

"This is it, we've built this great thing and we've totally messed it up." â Mike Krieger, co-founder of Instagram, about the night the company launched.

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Andrew Holder for NPR