Siemens' Chris Stevens on Adaptive Production, AI "Light Bulb Moments," and Why Digital Transformation Hinges on People

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Overview

In this episode of Manufacturing Happy Hour, host Chris Luecke talks with Chris Stevens, SVP and GM of the US Automation Business for Siemens Digital Industries. The conversation asks how manufacturers can build operations that flex with demand rather than run on rigid, fixed automation. Stevens argues that the answer combines software-style ways of working, contextualized data, AI, and digital twins, and that the whole effort still depends on bringing people along.

17 min read

From Taking Humans Out of the Loop to Bringing Them Back

Stevens spent most of his two-decade-plus Siemens career on the software side, in the DISW organization, working on digital twins of both product and production. He moved to the automation group about two years ago. Asked about the most drastic change he has seen, he began with what has stayed the same. Twenty years ago the hot terms were lean manufacturing and continuous improvement. His work then centered on the virtual world: manufacturing bills of materials, bills of process, process optimization, and simulation. The digital twin concept from that era is still in use, and he noted that almost everyone uses the term now.

What has changed, in his account, is the goal of automation. Back then, the focus was on automating a station and taking humans out of the loop. Today the conversation is more about bringing humans back into the loop, and he credits AI with driving that shift. He tied it to the skilled workforce gap and cited studies estimating that 5 to 8 million manufacturing jobs will be available by 2030 that cannot be filled. His response to that gap is what he calls adaptive manufacturing. Systems are automated, but humans stay in the loop to validate when validation is needed, to apply their expertise, or to spread their skills across five stations instead of one.

Stevens also described a cycle of interest in autonomous manufacturing. It was a hot topic three or four years ago, both in automotive and in manufacturing generally, under the banner of "lights out" production. Interest then cooled. He sees it coming back, and pointed to a video he had recently watched about Tesla and Elon Musk's vision for robotics and autonomous manufacturing. He said Siemens is having more and more of these conversations in the semiconductor space. His summary of the arc was lean and continuous improvement focused on automating stations, then adaptive, and now a renewed question of what an autonomous stage might look like.

Moving at the Speed of Software

Luecke asked whether Stevens's software background gave him a different outlook as the industry moves toward software-defined manufacturing. Stevens said customers now understand how software works and want to "move at the speed of software": make a decision, click a button, and go.

He contrasted the engineering and IT world with the shop floor. On the engineering and IT side, companies have automated processes and QA, know how to replicate environments, build in redundancy, handle cybersecurity, and collaborate effectively, especially since COVID. Those practices have not yet translated to manufacturing. His example is PLC code. Today it often lives on one person's laptop and gets carried on a memory stick down to the PLC for an update. In the software-defined model, teams collaborate on the code on a shared platform and validate it through virtual commissioning. Once the code is confirmed good, they push it to the control layer with a button. Stevens said managing shop-floor assets also resonates with customers, including the code, the PLCs, and the various IPCs.

He acknowledged that gaps remain. Certain industries have requirements around high performance, safety, or motion that Siemens is still working to address "as fast as possible." He also observed that IT roles, which were typically absent from the shop floor, are now appearing there, and he read that as a sign that the two worlds are converging. For him personally, bringing those worlds together has been a lot of fun, because he spent years having these conversations outside manufacturing.

AI as a Thought Partner: Copilots Versus Agents

Stevens looks at AI through two lenses, internal and external. Internally, he said Siemens "can't go fast enough." He described a mindset shift that he believes few people have made yet. Most people use AI for small tasks like drafting emails or a white paper. He wants people to treat it as a creative thought leader sitting next to them. Some of his examples: simulating a customer meeting to get feedback on what to do differently, or preparing for a big decision by giving the AI proper context and asking it to pose three interview-style questions that help reach a conclusion.

He calls this kind of use "copilot," which is reactive: you ask, provide context, and get something back. Agents are proactive. Siemens is "placing some big bets" on agents to support staff who work directly with customers, so they have the right information at the right time.

When Luecke asked for a concrete agent example, Stevens joked that in Silicon Valley, if you throw a stone you'll hit a startup building agentic AI. He then described an agent tied to a customer account. The agent scours public information along with internal context such as emails, meetings, and chats. It then surfaces what is happening and suggests next steps. For instance, it might report that company XYZ just announced a greenfield facility with a $360 million investment. It could then suggest packaging material on plant floor layouts or cost estimation for that customer. In effect, the agent comes to you and says there is something to act on. Luecke summarized the distinction as copilots are reactive and agents are proactive.

The Light Bulb Moment: Predictive Maintenance at a CPG Company

Externally, Stevens said AI is "the hottest topic hands down." These conversations happen with presidents, C-level executives, and boards, not only with controls engineers. Leaders see AI as being as transformative as the internet, and he described their mood as "a race to the finish." Siemens tries to anchor these discussions in outcomes and use cases. Stevens said he is surprised how often material he considers fairly elementary produces light bulb moments. His team thought some of its messaging was six months stale and needed updating, but found it still resonates.

His most recent example came from a consumer packaged goods company and involved predictive maintenance. He noted that people understand AI from consumer use, like asking for travel ideas or what to cook with certain ingredients. What they often miss in the industrial context is that a model is only as good as what you feed it.

In this company, 50 machines worldwide were all maintained on the same schedule, whether a machine was 5 or 15 years old. Parts arrived at the same time and maintenance happened whether it was needed or not. That meant downtime plus investment in parts and labor. Stevens said changing this schedule was "taboo." Siemens showed that data could drive the scheduling instead, based on parameters for each machine such as temperature or moisture. Stevens mentioned six parameters in the example. Under that approach, one machine might be serviced on day 10 and another on day 180. When the company ran the ROI, Stevens said, "it just blew their mind," and the discussion led to an opportunity he was working on the day of the recording.

Why Data Contextualization Matters

According to Stevens, the light bulb got brighter once the conversation turned to data. More data makes the model better, but the data also has to be contextualized. Many manufacturers today push large amounts of data to dashboards, which he said causes "dashboard fatigue." A dashboard tells you something is wrong but not why, what happened, or where, and it does not help with root cause.

Contextualization means building relationships in the data. This motor belongs to this robot, which belongs to this line, which belongs to this plant. Those relationships matter when analyzing at the plant, line, and station level. When contextualized data feeds the model, he said, the information gets richer and the savings grow. At that point the light bulb is "so bright you got to put sunglasses on." What he enjoys most is walking a customer from the outcome they want all the way back to a specific machine on their floor and the data it produces, with the digital twin in the middle for validation. He noted that consumer LLMs have been trained on millions of books and much of the internet, and said industry has not yet done the equivalent with its own data. That, in his view, is where the work needs to happen.

Luecke summarized the flow as use case and outcomes, then data, then contextualized data. Stevens agreed and added a fourth step: how hard it is to actually get data off the shop floor. He described a company that bought $2.4 million worth of sensors because it knew it needed data, with a plan to deploy thousands of them. Siemens agreed the sensors were needed but stressed that contextualizing their data was critical.

Edge Versus Cloud

When asked how contextualization is done in practice, Stevens first challenged a claim he attributes to hyperscalers, that everything can be done in the cloud. He said that is not true. For real-time use cases such as visual inspection on the shop floor, cloud latency is unacceptable.

Siemens' answer is its Industrial Edge platform. It connects to the various shop-floor assets, pulls their data into a common platform, and applies technology that maps and contextualizes the data by building the relationships among motors, robots, lines, and plants. From the edge, data can go to a large language model in the cloud when heavy compute is needed, or to a model running at the edge, depending on the use case. Often both are needed. Stevens said this is why Siemens has partnerships with hyperscalers, to support the edge-to-cloud relationship he considers important for AI. Luecke added "contextualization at the edge" to the recipe, and Stevens agreed.

What Adaptive Production Means

Stevens will be discussing adaptive production at SPS Atlanta, and Luecke asked for a simple definition. Stevens contrasted it with the fixed, rigid automation of 20 years ago, where a station performed one motion, such as moving something up and down in 10 seconds, before the product moved on. Adaptive production lets a factory flex with demand as demand, technology, or the assemblies coming down the line change. Stations, especially robotic ones, can handle different configurations and assembly operations.

His simple version: a single line can run 50 different products. Each station reads the incoming product's bill of materials and bill of process, adjusts, performs its operation, and passes the product on.

AGVs, One BOM, and Lot Size of One

To show how this changes both engineering and operations, Stevens used a final assembly scenario in automotive and referred to a Siemens capability he called BOPEX. A vehicle's top hat sits on an AGV that can go to any of three stations. The AGV reads the configuration, identifies which compatible station is open, moves there, and completes the operation. It knows exactly what is needed because it reads the bill of process for that assembly at that station, and then it moves on.

On the engineering side, he said, this lets designers plan from the start with operations and variants in mind. A single master bill of materials can hold options and variants that produce 50 different configurations. That is what leads to "lot size of one," which he described as the modular approach. Customers want their own customized version of a car, a phone, or anything else, with their chosen color and interior, so that it feels like theirs. He said this changes the game in both engineering and production.

When Luecke highlighted "one BOM for 50 configurations" as the core of adaptive production, Stevens added that it also allows virtual validation of every configuration option. Testing then combines virtual validation with the physical testing that is still required. He called it "massive" and "a big deal."

Reshoring: Greenfield Is Straightforward, Brownfield Is Where the Work Is

For a mostly North American audience interested in reshoring and nearshoring, Stevens framed the connection through greenfield versus brownfield sites. Greenfield is the easier case. You start with a blank sheet, apply the standards and technology you want, bring in lessons learned, build and validate the whole digital twin virtually, and then start construction, with no production to disrupt.

Brownfield is harder, and Stevens said Siemens spends about 90% of its time there, though he added it is not as tough as people think. It starts with data, because many companies don't actually know what assets they have. Once they do, a digital twin is built so that new products or programs, automation, or robotics can be introduced virtually. He noted this is far cheaper than doing it physically and doesn't disrupt production. These projects can also consider sustainability and energy optimization. After validation, the discussion turns to implementation, possibly including a software-defined automation layer on top of existing controllers to make changes with minimal disruption.

Stevens said Siemens is in a distinctive position because it covers both the virtual side, with digital twins of product and production that show how product changes affect production, and the physical side. For implementation, the line builder, machine builder, solution partner, and end user sit down together around the digital twin to decide on the approach. That might mean updating the control layer, adding sensors, or adding an edge layer. In his experience, conversations about which products can be made where always come back to creating a production twin, because "there's so much value there."

Digital Transformation Fails on People and Process, Not Technology

Luecke observed that they had spent 36 minutes discussing digital transformation without using the term. He asked how it enables exponential production improvements, referencing recent comments by Siemens executives Del Costy and Barbara Humpton. Stevens called digital transformation an umbrella term, saying there isn't a single company not talking about it. Everything they had discussed falls under it. But he said it is not only about technology. It is also about people and process.

People come first. The skilled workforce has to be included in decisions, especially on usability. He mentioned a call earlier that day where his first question was how the company viewed usability, and it sparked a long discussion. If people don't use the system, he said, the value never arrives, however impressive the technology. That requires proper training and organizational change management.

On process, he listed several questions. Is there alignment up front? Is success defined, including which outcomes count and how you will know you've achieved them? He tied success to adoption. Is validation continuous, for example with scrum-style methods that put mockups in users' hands early? Stevens said many digital transformation projects fail for reasons that have "nothing to do with the technology." They fail on usability and implementation, including poor issue management, communication, and governance. He said Siemens' keynote at SPS would cover the process side extensively.

Closing Thought: Adoption and a Customer-Focused Reorganization

Given the chance to add a final point, Stevens returned to adoption, which he feels is not discussed enough. He said Siemens recently went through a major internal transformation. Before it, the company was, "quite honestly," focused more on Siemens itself and its products than on customers, their industries, and the business problems they are trying to solve. The reorganization aims to understand customers, speak in their language, and match solutions to their actual problems. "Nobody cares about our organization. Nobody cares about our products, features, and functions," he said. What customers care about is what they get.

He ended by describing the current moment as a big transformative wave. Because things are moving so fast, he said, everyone, Siemens and its customers alike, is "trying to figure it out together." Siemens, he said, is positioning itself to be adaptive toward its customers as well.