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Most companies think they're building a software factory. They're actually just shipping bugs faster.

Industrialized factories changed how the world produced physical goods: more output, lower costs, faster than anything that came before. Now a similar shift is happening with software. LLMs have lowered the barrier to writing code, increased individual output, and pushed organizations to think about software development as a production system. The standard software development lifecycle and CI/CD practices that have held for decades won't hold up under that pressure. That's where the software factory comes in — and like physical factories, it needs more than speed to actually work.The idea of a “software factory” started to solidify over the past year. Luca Rossi's "The Era of the Software Factory" made the case plainly: AI is not just changing how fast people write code — it's changing the whole production system around software. The concept can mean different things: a collection of coding agents and skills files; faster CI/CD; better review systems; or more automation around software delivery. A better frame is to think of it less as a tool category and more as a set of principles. A software factory can't just be a loose collection of prompts, agents, and plugins. It needs a platform that defines how work moves through the system and how code is generated, reviewed, tested, traced, deployed, and improved when something goes wrong.Otherwise all you’re doing is putting yet another one-off machine into an empty room and calling it a factory. Why is this happening now?There are a few forces all hitting at the same time.Companies have always wanted more software than engineers can produce. That’s why tools like Excel exist: They often fill in the gap for a lot of the software that many companies wish they could make.AI has also lowered the barrier of entry to creating code, and this is the part everyone focuses on. Code creation is now easier, though not always cheaper or better, as evidenced by many high-profile companies fretting over their high AI bills. The barrier to writing functional code has effectively collapsed.More importantly, a single engineer can generate more code than they could just a few years ago. That changes the bottleneck: it’s no longer “How fast can someone write this?” or even, in some cases, “Can someone understand how to code?” Instead it becomes, “Should this be written?” More importantly, can we actually create end products that are durable and reliable and don’t just build tech debt? Or are we just putting out more AI slop faster than ever? That’s where the danger lies. The dangers of the modern software factoryAll of this sounds great. Factories, after all, made production faster and more consistent. They made it possible to build more cars and products, less expensively, which led to more people being able to afford cars and products. Putting environmental impacts aside, you could argue this was positive.But like many things in engineering, there are always tradeoffs, and in this case, there are new risks.When you increase the output of one person with machinery, digital or otherwise, you also increase the mistakes that can be made either by the individual or the machinery. The speed at which code can now be put out is on an industrial scale. Even smaller organizations can suddenly have code bases ballooning up to the size of tech company code bases a decade ago. The data is already showing problems. Faros AI found that while task throughput per developer is up 33.7% and PR merge rate is up 16.2%, the incidents-to-PR ratio has risen 242.7% and bugs per developer are up 54%. Google’s DORA research found that more AI adoption was actually associated with worse delivery stability. As a fractional head of data, I've been brought in to fix these exact issues. In the past year alone, I've worked on two projects where AI-generated data infrastructure slowly started to morph over time.Between multiple engineers trying to move quickly and a lack of standards, these projects became unruly. Code bases tend to go through some level of evolution, but as different styles blend, the LLMs in turn start to create their own mutations. Codebases developed five to six different styles within months — a process that previously took years. Layer by layer, the engineers would slowly stop understanding exactly what was going on.The pattern echoes what happened a decade ago with self-service tooling: early productivity gains that masked downstream complexity.And that’s why the software factory can’t just be about speed. What makes a software factory workThere are several key principles to consider when building a software factory.Platform over tools: Many teams are slowly implementing AI into their coding workflows at the edges — adding a PR review agent or a skills file into their repos. But building an actual software factory requires a platform, not a collection of tools at the edges. A platform provides a unified foundation where tools aren't scattered in separate corners. Instead, they actively share data, talk to each other, and work as a single cohesive system — standards, processes, and the work itself all connected. Rerunability and traceability: A real platform requires the ability to go back into any run, identify what went wrong, and rerun it — which is why one-off agents don't make a factory. The system needs to support taking a serial ID, looking it up, and tracing exactly how it got to the output it produced. This is why state machines make more sense than loops for AI workflows: they make it far easier to rerun a process and understand what happened at each step.Safety and guardrails: Factories are not safe places. Neither is a software factory. As more people develop on these platforms, better guardrails and safety measures need to be built in. Testing and quality control need to be pushed to the front of the process — catching bugs at the lowest possible stage reduces the cost to fix them and limits the blast radius.Standardization: At the enterprise level, every codebase has its own flavor. Layering a code assistant on top without standards produces an amalgamation of styles. Standardization has to be built into the process from the start.Quality control: In older manufacturing models, quality control happened at the end of the line. The product was built, inspected, defects found, and fixed later. Toyota's approach was different. Quality was pushed into the process itself — workers were expected to stop the line when something was wrong. The goal wasn't to catch defects at the end; it was to prevent them from flowing downstream in the first place. The same is true for the software factory. QC needs to be baked into the entire process, starting with how the spec is written. That means integrating static code analysis that catches obvious errors and providing templates to LLMs so they know the structure the code should follow. Without that, the bottleneck becomes the final review — or teams just push out more AI slop.Speed without quality isn't productivityImproving the speed of your code output is not actual productivity if the downstream issues aren’t managed. A company is not more productive because it produces millions of cars, only to see them all fall apart within 100 miles. It’s also not more productive if all it does is produce an endless stream of proofs-of-concept that never enter production. Actual productivity is when the software factory takes ephemeral tokens and turns them into durable outputs. It's easy to talk about lines of code and how much faster your team is moving.The software factory that wins isn't the one that generates the most code. It's the one that generates the fewest defects downstream.