📜The History of Product Management
From P&G in 1931 to the AI PM of 2026 — a 90-year arc that explains why the role is what it is today.
Most of the confusion about what a PM is comes from the role having three distinct historical origins — brand management, hardware product management, and software product management. Knowing the lineage helps you decode why different companies define the role so differently.
Product management started in 1931 at Procter & Gamble as 'brand management,' jumped to Silicon Valley hardware companies (HP, Intel) in the 60s-70s, then exploded with software in the 90s (Microsoft, Intuit) and the web/mobile era. The modern 'empowered product team' model is roughly 15 years old. The AI PM era began in 2023.
1931 — Procter & Gamble invents brand management
Neil McElroy, a junior P&G marketer, wrote the famous "brand man" memo arguing that each soap brand (Camay, Ivory) needed a single person responsible for its end-to-end success — marketing, sales, distribution, P&L. P&G adopted it. This is the genesis of product management as a discipline. The framing — "one accountable person owning the brand's outcomes" — is still the core of the role.
1950s-70s — Hewlett-Packard and the hardware PM
HP imported brand management to tech, calling it product management. Bill Hewlett famously believed that the PM should be the "voice of the customer" inside engineering — a phrase that still gets used (and misused) today. Intel, Tektronix, and other hardware companies followed.
1980s-90s — Software product management is born
Microsoft and Intuit are the two breakthrough software examples. Scott Cook at Intuit famously interviewed customers in their homes ("Follow Me Home" program), generating a customer-centric discovery culture that shaped modern PM. Microsoft built the first large-scale PM org in software, with the PM as a partner to dev and test.
2000s — The web era and agile
The dot-com era turned software into a service that could be updated continuously, which changed the PM job from "specify the v1, ship in a year" to "ship every two weeks, iterate forever." Agile methodologies (Scrum, XP) became standard. The "product owner" role from Scrum got tangled up with the PM title — in some companies they merged, in others they're still separate.
2010s — Lean Startup and the empowered team
Eric Ries's Lean Startup and Marty Cagan's Inspired defined the modern PM playbook: customer discovery, MVPs, hypothesis-driven development, A/B testing. Companies like Airbnb, Stripe, and Spotify codified the empowered product team model — small cross-functional squads solving customer problems with autonomy.
2010s-20s — The growth PM specialization
As mobile apps and SaaS saturated, the discipline split: traditional PMs owned core product, growth PMs owned acquisition, activation, retention, monetization. Reforge, Brian Balfour's school, became the canonical training ground. PLG (product-led growth) emerged as the dominant go-to-market motion for SaaS.
2023+ — The AI PM era
ChatGPT's launch in late 2022, followed by Claude, Gemini, and the open-source explosion, made AI a primary product category. The AI PM job emerged with its own skill set: prompting, RAG, fine-tuning, evals, agents, MCP, vibe coding. The first generation of AI PMs are mostly people who taught themselves; a whole new specialization is forming. This is where the field is right now.
What the arc tells you
Three things:
- The role is older than you think. It's not a tech invention; the bones come from CPG.
- The job has gotten more technical over time. Brand management was marketing-adjacent. Hardware PM added engineering literacy. Software PM added agile and data. Growth PM added experimentation. AI PM added LLM craft. Each generation has had to learn more.
- The expected output is shifting. Early PMs wrote long specs. Modern PMs write less; they ship more, iterate more, talk to more customers. AI PMs are heading toward "less specs, more prompts and prototypes."
Knowing where the role came from helps you understand why your skip-level VP has a different mental model than you do — and how to bridge it.
Real-world examples
Neil McElroy's brand man memo — three pages long — created the role of brand manager and the principle of single accountability for a product's success. It's the single most influential document in PM history.
Scott Cook's 'Follow Me Home' program had Intuit employees physically watch customers use TurboTax in their homes. The insights drove product decisions for decades and seeded the customer-discovery culture that's now mainstream.
Go deeper — recommended reading
Interview questions (1)
Q1When and how did product management start?behavioraljunior▼
1931, at Procter & Gamble. Neil McElroy wrote a three-page memo arguing that each brand needed a single accountable person managing it end-to-end. P&G called it brand management; the principle migrated to Hewlett-Packard and other tech companies in the 50s-70s as 'product management,' then to software in the 80s-90s with Microsoft and Intuit, and to the modern empowered-team model with Marty Cagan and the Agile movement in the 2000s-10s.
The throughline is single accountability for a product's outcomes — that's the bone the role is built on, even as the day-to-day work has gotten more technical and customer-centric.