The U.S. Space Force (USSF) is releasing a series of architecture documents related to the Operational Test and Training Infrastructure (OTTI) program, aimed at informing industry stakeholders and facilitating future planning opportunities. These documents outline the architectural framework necessary to meet the requirements specified in the OTTI System Requirement Documents (SRDs) and are intended to gather industry feedback on the proposed technical direction. The input from industry is deemed essential for refining the program's architecture as it evolves, with updates to the documents expected to be posted on the Sam.gov opportunity notice as they occur. Interested parties can reach out to Ashley Irizarry at ashley.irizarry@spaceforce.mil or Megan McChrystal at megan.mcchrystal@spaceforce.mil for further information.