Akamai Technologies has entered into a tentative lease that could see the American content delivery network and cloud services provider relocate its corporate headquarters to a 475,000-square-foot office development being proposed by Boston Properties.

Located across the street from Akamai’s current headquarters at 150 Broadway in Cambridge, MA, the planned development at 145 Broadway would be fully occupied by Akamai on a 15-year term with a 10…