To increase coverage and equity of routine immunization services, the government of Tanzania is strengthening the data use culture through the implementation of a package of data quality and use interventions, including an electronic immunization registry, for immunization service delivery. Three key phases for achieving scale as a government-owned model emerged during the implementation: user-centered design and testing, PATH-led implementation, and government-led implementation with scale-up. A combination of factors contributed to achieving a government-owned model of implementation and ultimately showed significant time and cost savings, as well as greater ownership and ability to sustain and scale the interventions.