Introduction This is a notice of intent, not a request for a quotation. A solicitation document will not be issued, and quotations will not be requested. Purpose The National Institute of Standards and Technology (NIST) intends to negotiate a firm-fixed priced purchase order on a sole source basis with Siemens Industry Software, Inc., located at 5800 Granite Parkway, Suite 600, Plano, Texas 75024-6612. The purchase order will specifically include procuring 45 units of Altair Mechanical Engineer software (Product Code: AU - ME - STD – AN), manufactured by Siemens Industry Software, Inc. The software licenses shall be effective for one year after inspection and acceptance and activation of the software licenses. Authority This acquisition is being conducted under the authority of, and in accordance with, FAR RFO Part 12.102(a) and 41 USC 1901, allowing the Contracting Officer (CO) to solicit from one source. The North American Industry Classification System (NAICS) code for this acquisition is 513210 – Software Publishers with a small business size standard of $47,000,000. Description The Engineering Laboratory (EL) at the National Institute of Standards and Technologies (NIST) promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology for engineered systems in ways that enhance economic security and improve quality of life. EL requires an integrated software platform to support research in co-simulation, digital twin development, and data analytics. Current research efforts involve combining physics-based modeling, system-level simulation, and data-driven methods within a unified workflow of digital twin development using software manufactured by Altair. Specifically, NIST has leveraged Altair software, such as inspire, motion solve, panopticon, motion view and twin activate as well as automated motion solve experiments for uncertainty analysis of simulation results. The purpose of this acquisition is to obtain an Integrated Simulation, Digital Twin, and Data Analytics platform that provides the following: • Supports system-level co-simulation across multiple physics domains. • Enables development and deployment of digital twins. • Provides integrated data analytics, machine learning, and visualization tools. • Operates under a shared or floating licensing model to maximize flexibility. • Supports scalable computing environments, including local and cloud-based execution. Sole Source Determination The sole source determination is based on the following: To ensure continuity and scalability of research, a software solution is required that enables seamless interaction between multiphysics simulation tools, system modeling environments, and data analytics frameworks under a unified licensing and deployment model. Specifically, the Integrated Simulation, Digital Twin, and Data Analytics software platform, manufactured by Siemens Industry Software, Inc., is the only solution …