Siemens Digital Industries Software

Siemens Digital Industries Software is the industrial-software business of Siemens AG. It develops and markets software used to design, engineer, simulate, manufacture, operate and service complex products and production systems. The business is best known for product lifecycle management (PLM) and computer-aided design, manufacturing and engineering tools, but its scope also includes simulation, industrial systems engineering, manufacturing operations management, low-code application development and electronic design automation. The business traces its commercial heritage to United Computing, a California software company founded in 1963. United Computing released UNIAPT in 1969, among the early commercially available end-user computer-aided manufacturing products, and later developed Unigraphics from software acquired from MCS. Unigraphics became a major 3D design and manufacturing platform. After United Computing was acquired by McDonnell Douglas, the business became part of the Unigraphics Group. EDS acquired the operation in 1991 and established Unigraphics Solutions as a separate subsidiary in 1997. The company adopted the UGS name in 2001, while EDS combined it with SDRC and related assets to create a broader PLM business. In 2004, EDS sold EDS PLM Solutions to Bain Capital, Silver Lake Partners and Warburg Pincus. UGS subsequently expanded through the acquisition of Tecnomatix Technologies in 2005. Siemens announced the purchase of UGS in January 2007 for approximately $3.5 billion, bringing the business into Siemens' industrial automation activities and creating Siemens PLM Software. The acquisition gave Siemens a substantial software platform for connecting product engineering with factory planning, production and service processes. Siemens expanded the portfolio through acquisitions including Innotec, Vistagy, LMS International, CD-adapco, Mentor Graphics and Mendix. These transactions broadened the business from traditional mechanical CAD and PLM into process-industry engineering, composite-material design, test and measurement, computational fluid dynamics, electronic design automation and cloud-oriented application development. Mentor Graphics became Siemens EDA after its legal integration with Siemens Industry Software in 2021. The company changed its formal brand name from Siemens PLM Software to Siemens Digital Industries Software in 2019. Its current portfolio is organized around a digital-twin and digital-thread approach: information created during product definition should remain usable through engineering, manufacturing, operation and service. Major offerings include Teamcenter for PLM and collaboration; NX and Solid Edge for design and manufacturing; Simcenter for simulation and testing; Tecnomatix for manufacturing and factory planning; Mendix for low-code application development; and Siemens EDA products for chip, printed-circuit-board and electronic-system design and verification. Siemens also provides technology components such as Parasolid, D-Cubed, JT and PLM XML. The business serves sectors including automotive, aerospace and defense, industrial machinery, electronics and semiconductors, energy, transportation, shipbuilding, consumer products and medical technology. It operates internationally through Siemens' global sales, services and partner networks. The brand is a business unit rather than a separately listed company, and its legal operations include Siemens Industry Software Inc.

The business originated in the American CAD/CAM software industry. United Computing was established in 1963 in Torrance, California, and released UNIAPT in 1969. It later acquired the ADAM codebase from MCS, using it as a foundation for Unigraphics, which entered commercial use in 1975. McDonnell Douglas acquired United Computing in 1976 and developed the Unigraphics Group into a significant CAD/CAM operation. EDS acquired McDonnell Douglas' systems-integration activities, including Unigraphics, in 1991. EDS later organized the operation as Unigraphics Solutions, which acquired businesses including Engineering Animation and Applicon. The company adopted the UGS name in 2001. EDS combined UGS with SDRC and related Nastran assets to form EDS PLM Solutions. After EDS sold that business to Bain Capital, Silver Lake Partners and Warburg Pincus in 2004, the operation again traded under the UGS name. UGS acquired Tecnomatix in 2005, adding manufacturing-process planning and production software. Siemens agreed to acquire UGS in January 2007 for approximately $3.5 billion. Following the transaction, UGS became Siemens PLM Software and was incorporated into Siemens' industrial automation activities. Siemens subsequently acquired Innotec, Vistagy, LMS International, CD-adapco and other software companies, expanding the portfolio into process engineering, composites, simulation, testing and manufacturing. The acquisition of Mentor Graphics, announced in 2016, was particularly significant because it brought semiconductor, electronic-system and PCB design capabilities into the industrial software portfolio. Siemens also acquired Mendix in 2018, supporting a move toward low-code application development and cloud-based industrial software. In September 2019, Siemens renamed Siemens PLM Software as Siemens Digital Industries Software. Mentor Graphics was legally merged into Siemens Industry Software in 2021 and became Siemens EDA. Avery Design Systems was acquired in 2022. The business continues to combine PLM, simulation, manufacturing, electronic design and application-development technologies under Siemens' broader Digital Industries strategy.

1. 2022Avery Design Systems is acquired

   The acquisition expanded Siemens' verification intellectual-property portfolio.

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2. 2021Mentor becomes Siemens EDA

   Mentor Graphics was legally merged into Siemens Industry Software and adopted the Siemens EDA identity.

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3. 2019The business is renamed

   Siemens PLM Software formally became Siemens Digital Industries Software.

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4. 2018Mendix is acquired

   The acquisition added a low-code platform for enterprise and industrial application development.

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5. 2016Mentor Graphics acquisition is announced

   Siemens announced the acquisition of Mentor Graphics to add electronic design automation and semiconductor engineering capabilities.

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6. 2007Siemens acquires UGS

   UGS became Siemens PLM Software, forming the core of Siemens' industrial software business.

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7. 2005Tecnomatix is acquired

   The acquisition strengthened manufacturing planning and factory-automation software capabilities.

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8. 2001The UGS name is adopted

   Unigraphics changed its corporate identity to UGS Corporation.

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9. 1997Unigraphics Solutions is established

   EDS organized its Unigraphics operation as a wholly owned subsidiary.

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10. 1975Unigraphics enters commercial use

    Software derived from the ADAM codebase was commercialized as Unigraphics, laying the foundation for later NX products.

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11. 1969UNIAPT is released

    United Computing released UNIAPT, an early commercial end-user computer-aided manufacturing product.

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12. 1963United Computing is founded

    The company’s historical predecessor was established in Torrance, California.

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An industrial digitalization platform linking product engineering, simulation, electronics design, manufacturing and lifecycle operations through digital twins and digital threads.

• TeamcenterProduct lifecycle management

  Teamcenter is an enterprise PLM and collaboration environment used to manage product data, requirements, configurations, engineering processes and lifecycle information. It is intended to connect product-development teams with manufacturing, procurement, service and other enterprise functions.

• NXCAD/CAM/CAE

  NX is Siemens' integrated design, engineering and manufacturing suite. It supports 3D product modeling, mechanical engineering, computer-aided manufacturing and computer-aided engineering workflows for complex industrial products.

• Solid EdgeCAD

  Solid Edge is a mechanical-design and manufacturing product line aimed particularly at small and medium-sized manufacturers as well as departments within larger enterprises. It combines parametric and direct modeling with tools for design management, simulation and manufacturing preparation.

• SimcenterSimulation and testing

  Simcenter brings together simulation, testing and engineering-analysis products. The portfolio includes tools such as Simcenter 3D, Amesim, Flomaster, FLOEFD and STAR-CCM+, supporting mechanical, thermal, fluid, systems and computational-fluid-dynamics analysis.

• TecnomatixManufacturing and factory planning

  Tecnomatix is a manufacturing-planning and digital-factory portfolio. It helps manufacturers model production processes, plan assembly and automation, evaluate factory layouts and connect product engineering with production execution.

• MendixLow-code application development

  Mendix is a low-code application-development platform used to build and operate enterprise applications. Within Siemens' portfolio it supports industrial and business applications across the systems-development lifecycle, from initial design through deployment and operations.

• Siemens EDAElectronic design automation

  Siemens EDA contains the former Mentor Graphics portfolio. It includes semiconductor verification, physical verification, analog and mixed-signal design, PCB design, hardware-assisted verification, formal verification, test and yield analysis, and related electronic-system engineering tools.

• Parasolid3D geometric modeling technology

  Parasolid is a geometric-modeling kernel used by Siemens products and licensed to third-party engineering-software developers. It provides core capabilities for solid modeling and the representation and manipulation of 3D engineering geometry.

• 2025Acquire Altair EngineeringM&A

  Siemens sought to expand its simulation, engineering and industrial-software capabilities.

  What changed. Siemens announced the acquisition of Altair Engineering and planned to integrate it into the Digital Industries organization.

  Acquisition value. Approximately US$10 billion (2025)

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• 2019Rename Siemens PLM SoftwareStrategy

  The former PLM organization had expanded into simulation, manufacturing, electronics and application development.

  What changed. Siemens changed the formal business name to Siemens Digital Industries Software.

  Aftermath. The new identity positioned the business as a broader industrial-digitalization platform rather than solely a PLM supplier.

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• 2016Acquire Mentor GraphicsM&A

  Siemens aimed to add electronic design automation and semiconductor-system engineering capabilities to its industrial software portfolio.

  What changed. Siemens announced plans to acquire Mentor Graphics and later incorporated its products into Siemens EDA.

  Aftermath. The deal significantly broadened Siemens Digital Industries Software beyond mechanical PLM into chip, PCB and electronic-system design.

  Acquisition value. Approximately US$4.5 billion (Announced November 2016)

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• 2007Acquire UGS and create Siemens PLM SoftwareM&A

  Siemens sought to strengthen its industrial-automation activities with a substantial product-development and lifecycle-management software platform.

  What changed. Siemens announced the acquisition of UGS and integrated the business into its industrial activities as Siemens PLM Software.

  Aftermath. The transaction became the foundation of Siemens' subsequent industrial-software portfolio and digital-twin strategy.

  Acquisition value. Approximately US$3.5 billion (Announced January 2007)

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• 2023Myanmar weapons-production and human-rights concernsControversy

  The Special Advisory Council for Myanmar identified Siemens Digital Industries Software among companies it said had assisted weapons production by Myanmar's military junta. The listing raised concerns that companies supplying relevant software or services could be exposed to complicity in human-rights violations.

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• 2025Siemens announces acquisition of Altair Engineering

  Siemens announced the acquisition of Altair Engineering, described in the reference material as a transaction valued at approximately $10 billion, with integration planned within Siemens' Digital Industries activities.

  M&A
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• 2022Siemens acquires Avery Design Systems

  Siemens Digital Industries Software announced the acquisition of Avery Design Systems, a supplier of verification intellectual-property products.

  M&AProduct launch
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• 2021Mentor Graphics legally integrated into Siemens

  The legal merger placed Mentor Graphics within Siemens Industry Software, with the business subsequently branded Siemens EDA.

  M&A
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• 2019Siemens PLM Software becomes Siemens Digital Industries Software

  Siemens announced the formal renaming of Siemens PLM Software, reflecting a broader industrial-digitalization remit.

  Leadership change
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• 2018Siemens acquires Mendix

  Siemens acquired low-code development company Mendix to support faster development of industrial and enterprise applications.

  M&A
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• 2016Siemens announces acquisition of CD-adapco

  Siemens announced plans to acquire simulation software company CD-adapco for approximately $970 million.

  M&A
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• 2016Siemens announces acquisition of Mentor Graphics

  The acquisition expanded Siemens' industrial-software portfolio into electronic design automation, semiconductor verification and printed-circuit-board design.

  M&A
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• 2007Siemens announces acquisition of UGS

  Siemens announced an agreement to acquire UGS, establishing the foundation for Siemens PLM Software.

  M&A
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1. Siemens Digital Industries Software
2. Siemens Digital Industries Software