Larry Kim and the useful art of changing his mind

Larry Kim gave a wonderfully unceremonious explanation for starting WordStream: “Laziness.” He was consulting on internet marketing, doing the same tasks repeatedly, and wrote software to take some of the work off his hands. A tedious afternoon had supplied a business idea. Entrepreneurs have built considerably more elaborate origin myths around considerably less useful discoveries.

There is a pleasing complication in that answer. Automating your own work can get a company started. Getting other people to buy the software, keep using it and pay enough to support employees requires a different education. Kim’s career has involved taking that second course repeatedly. The product that first made sense to its creator has not always been the product that customers needed.

Today he is the founder and CEO of CustomersAI, which works on website visitor identification, audience targeting and email performance. Before that came WordStream, the advertising software company Gannett acquired in 2018. In between sits a useful piece of the story: a successful founder starting again, discovering the limits of his new business, and changing its direction.

A piano teacher’s introduction to pricing

Kim grew up in Winnipeg, Canada. His mother was a self-employed piano teacher, giving him an early view of a business in which finding customers mattered as much as delivering the service. Entrepreneurship was visible at home, well before it arrived as a word in a pitch deck.

He studied electrical engineering at the University of Waterloo, graduating with an honors degree after studying there from 1995 to 2000. His education included internships at organizations as different as Royal Bank of Canada, Ford and Cypress Semiconductor. His final-year specialization was software engineering. The connection between engineering and marketing would later become the working arrangement of his career.

There is no necessary contradiction between those disciplines. Advertising produces costs, responses and conversions that can be measured; software can organize the work of acting on them. Kim found a place where a technical education could become a commercial service. He did not need to abandon engineering to enter marketing. Marketing gave him something to engineer.

The bakery phase of a software company

WordStream began in 2007, with Kim working from a Panera Bread. Free Wi-Fi helped make a bakery into an office. The setting is charming in retrospect; at the time it was a practical answer to the immediate problem of where to work.

Consulting brought in customers and exposed him to the repetitive chores of search advertising. It also gave him a way to support the software business before investors were ready to support it. The route from service work to a product was hardly automatic. Consulting could pay for development while also consuming the hours development required. Every client solved one problem and supplied another.

The first WordStream product concentrated on advanced keyword research. Kim later acknowledged a basic commercial weakness: customers could finish much of that work and stop needing the tool. A useful product still needed a reason for people to return. The company expanded into ongoing campaign management, supporting the recurring decisions advertisers made across search and social platforms.

That change is central to understanding the outcome. The company moved closer to the daily operation of its customers’ businesses. Campaign support, landing pages, lead capture and analytics gave it more jobs to do after the first keyword list was complete. Kim had to learn the difference between solving an interesting technical problem and building a durable customer relationship.

The price tag has small print

In 2008, WordStream secured a $4 million Series A investment. As the business grew, Kim concentrated on product and marketing while other executives handled more of the operating responsibilities. A founder can write the initial software; a growing company needs people who can build the rest of the organization around it.

By March 2017, when he announced his departure to build another startup, WordStream employed more than 200 people. He planned to remain on its board. Leaving was a choice about the work he wanted to do next, rather than waiting for a transaction to give him permission to move.

“I’m an early stage startup type of guy.”

Larry Kim, on leaving WordStream in 2017

Gannett completed its acquisition on July 2, 2018. The agreement specified $130 million in cash, net of cash acquired, and up to $20 million more in earnouts tied to revenue targets. That is the arithmetic behind the often repeated $150 million figure. At the time, Gannett forecast approximately $55 million in revenue from WordStream during the first year.

The buyer wanted software that would expand its digital marketing offering for local and regional businesses and agencies. Kim’s original attempt to make advertising work less laborious had become something a newspaper publisher could use to serve its own business customers. The buyer’s rationale offers a more concrete measure of the company’s value than an exit headline alone.

A monkey, a platform, and a change of mind

His next venture, MobileMonkey, pursued chat automation for businesses. Facebook Messenger offered a large audience and a direct way for a company to communicate with people. It was an appealing place to build, provided the platform continued to allow the things the business wanted to offer.

That qualification grew troublesome. Meta controlled access to features, while competition among Messenger marketing tools crowded the market. In explaining the eventual rebrand, Kim described spending three years trying to establish a sustainable position. The difficulty was structural: his team could improve its own product without controlling the rules under which that product operated.

The company changed course toward sales outreach automation and data. Experience assembling its own outbound marketing tools suggested another problem it could address for customers. In 2023, MobileMonkey became Customers.ai. Even the old name had become awkward: a monkey was being asked to explain a business that had moved on from its original habitat.

The pivot gives the second company an unexpectedly familiar shape. WordStream had expanded beyond a narrow keyword tool; MobileMonkey moved beyond its initial dependence on chat. In both cases, the first idea opened a door, then demanded revision. Starting over did not exempt Kim from the need to change his mind.

Unicorns with a day job

Alongside the companies, Kim built a public identity as a marketing writer and speaker. His work appears at Inc., Medium and marketing publications, and his conference appearances have included INBOUND, SMX and other industry gatherings. The person explaining the software became part of the way people discovered it.

His recurring unicorn imagery makes a statistical idea easy to remember: a small number of efforts can account for a disproportionate share of results. Find the unusually effective campaign and give it more attention. The creature is whimsical; the allocation decision is quite serious. A unicorn, in this setting, has a budget meeting to attend.

That language also suits someone who has spent years translating technical work for people trying to run businesses. The point of a memorable metaphor is that an audience can take it home. Still, the career behind the metaphor includes abandoned assumptions, customer turnover and a product that needed a new name. A useful marketing story leaves room for those less decorative details.

The award he singled out

In 2019, Kim received the Barry M. Portnoy Immigrant Entrepreneur Award in the High-Tech Business category. He called it his most meaningful professional honor. For someone whose public biography contains plenty of marketing awards, that choice deserves a moment.

He has explained his ambition in terms of employment: creating opportunities for people to learn skills, earn a living and advance. His family’s move from Korea to Canada, followed by his own move to the United States, sits behind that account of what a company can accomplish. A business becomes a place where someone else can begin a career.

That is a different way to count the result of a startup. The acquisition amount remains part of the record, but so do the positions created along the way. It gives the urge to build another company a purpose beyond repeating a profitable transaction. There are people on the other end of the organization chart.

Back at the workbench

In 2026, Kim’s public activity has remained closely tied to the problems CustomersAI sells tools to address. He announced a February Litmus Live panel on AI in email campaigns. His company described X-Ray visitor identification, Inboxer email deliverability and the Alfred AI audience agent as parts of its offering.

He also described an internal competition in which departments built and demonstrated agentic AI projects, with prize money attached. The assignment was to save time or improve the company’s products and services. The founder who once wrote software to remove repetitive work was asking employees to look for their own versions of that opportunity.

There is continuity here without a neat ending. The channels have changed from search advertising to chat to email and customer data. The work keeps returning to a practical question: which part of the job could be done better? For Kim, answering it has repeatedly involved building something, watching what happens, and being willing to alter the answer.