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After serving as a magnet in Kendall Square for hundreds of upstart tech companies and Web giants such as Facebook and Amazon.com, the Cambridge Innovation Center is opening a major outpost in downtown Boston with enough space for about 300 startups.
The center that lets young companies share office amenities such as copiers and kitchens has signed a lease to take over five floors at 50 Milk St., a part of town that has traditionally been home to lawyers and bankers but has recently seen an influx of tech newcomers such as PayPal and Isobar, a digital advertising company.
That trend will only accelerate once the CIC Boston opens in April. It will occupy about 70,000 square feet over five floors and accommodate about 1,200 people.