One of the reasons Instagram took off like a rocket was because the app was mind-bendingly fast at uploading and streaming photos.
In a presentation last year, Instagram co-founder and lead engineer Mike Krieger showed off the secret to why Instagram is actually that fast.
Instagram actually starts uploading a photo even before you have selected a filter, whereas most photo apps begin uploading after the photo has been filtered or tagged.
Since then, Facebook bought Instagram for more than $1 billion.
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