1. A computer-implemented method executed by one or more processors, the method comprising: receiving a request for a decision at a decision manager system, the received request associated with a unique identifier; classifying the request based on metadata associated with the received request; identifying a decision approval rule set based on the classified request, the decision approval rule set identifying a set of approvers and a defined schedule associated with routing requests to the set of approvers; identifying at least one prior approval associated with the unique identifier associated with the received request, the at least one identified prior approval associated with at least one approver among the identified set of approvers, wherein the at least one identified prior approval corresponds to at least one approval associated with a prior related request to the received request; and reducing time and resources consumed in reaching the decision by applying the at least one prior approval to the decision associated with the received request and automatically updating, at the decision manager system, the set of approvers by automatically applying the at least one prior approval associated with the request in association with the corresponding at least one approver and removing the at least one approver from the set of approvers in the defined schedule associated with routing requests to the set of approvers before sending the request to any approver in the set of approvers; and wherein the identified decision approval rule set defines at least one rule determining when a prior approval of at least one approver is no longer valid based on subsequent actions by at least one other approver in the set of approvers, the method further comprising, in response to determining that the prior approval of the at least one approver is determined to be no longer valid: removing the at least one prior approval from being applied to the decision associated with the received request and automatically updating the set of approvers to include the at least one approver associated with the no longer valid prior approval and updating the defined schedule routing of requests to include the at least one approver associated with the no longer valid prior approval.