This whitepaper covers how to expedite authority to operate and secure development at scale in the U.S. Government by connecting secure software development and ATO. U.S. government agencies are undergoing tremendous change in the area of secure software development maturity. A key benefit of the change is the reduction in time to achieve Authority to Operate (ATO) for software applications. Ensuring software is constructed with security in mind from the very beginning of the software development process reduces the risk of a breach and streamlines ATO attainment.