ramp up
verb
Definitions
To increase rapidly to a new value.
Example: Headcount ramped up over three months.
To increase (something) rapidly to a new value; to cause (something) to ramp up.
Example: The manager ramped up headcount.
To start up; to be in an initial phase of rapid increase.
Example: The 5G development project will ramp up in the first quarter.
To start (something) up; to cause (something) to ramp up.
Example: He wants to be first to ramp up his project.