Amazon.com Inc. AMZN, -5.00% said Tuesday it will invest more than $450 million in two new benefits and rate increases, to offer competitive compensation for delivery service partners (DSPs) and drivers. The benefits include a new academic program called Next Mile that provides up to $5,250 a year to DSP drivers for access to more than 1,700 academic programs, and a 401(k) savings plan that provides $60 million so DSPs can match employee contributions.