In the sentence "The new computer program was designed by the IT team," who is the doer of the action?

In the sentence "The new computer program was designed by the IT team," the doer of the action is "the IT team." The doer, also known as the agent, is the one who performs the action of designing the program. In passive voice constructions, such as this sentence, the focus is on the action and the recipient of the action rather than the doer. The phrase "was designed" indicates that the action has been performed, and it is important to note that the IT team is identified through the prepositional phrase "by the IT team." Thus, the IT team is responsible for the design of the new computer program.