A customer had to persuade Ray Zhou to take their money. Affinity had become important enough to that customer's operation that its price could no longer remain a polite mystery. Zhou and his co-founder, Shubham Goel, kept improving the product and putting off the commercial conversation. The customer brought it up for them. In the usual startup story, founders must convince someone to buy. Here, the buyer had to convince the founders to sell.
Zhou later recalled that they wanted to be certain the software delivered before charging. Once they crossed that threshold, they reached their first hundred customers within a couple of months. There is a small comedy in building a tool for dealmakers while hesitating over your own deal. There is also a useful clue to Zhou's priorities: the product had to earn its place in someone's working day.
The episode belongs near the beginning of his story because it puts a human face on a phrase that can sound rather airless: relationship intelligence. Affinity's business involves communications data, software, and investment firms. Its origin involves people telling two young builders how they worked, what irritated them, and eventually what they needed to keep. The spreadsheet has a supporting role. The customer gets the good line.
Two roommates, one unfinished degree
Zhou studied computer science at Stanford from 2012 to 2014. He left after two undergraduate years to build Affinity, founded in 2014. His earlier experience included teaching as a CS106 section leader and working as a software engineering intern at Amicus. He had been practicing both sides of an engineer's job: making something function and helping someone else understand it.
The choice of Stanford had not been automatic. He also considered Wharton. His father had worked as a physics professor in Singapore before pursuing a company in Silicon Valley around 2000. Zhou described growing up around the Bay Area and finding himself drawn to the optimism of its builders. Entrepreneurship was close enough to see long before it became his occupation.
At Stanford, Goel became his roommate and collaborator. They would finish coding assignments so they could return to coding side projects. A campus talk by Joe Lonsdale and Drew Oetting led to conversations and introductions into financial and professional services. Zhou credits both intention and chance in the company's beginnings. They wanted to build; the people they met helped them discover what deserved building.
Both founders were fellows at the Garage, a Pear Ventures program for entrepreneurial Stanford students. The problem taking shape there concerned professional networks: people accumulated valuable connections, but the communications that explained those connections remained scattered. Who knew someone was only the beginning. Why they knew them, and whether the relationship was still active, mattered too.

The address book had forgotten the plot
Imagine asking a colleague for an introduction. A name in an address book tells you that contact exists. It cannot, by itself, tell you whether the colleague spoke with that person yesterday or exchanged business cards years ago. Those two situations invite rather different emails. A contact list preserves the cast; the correspondence contains the plot.
Zhou and Goel heard related complaints from professionals whose work depended on relationships. In their 2021 interview about venture capital software, they described a mismatch between conventional sales tools and the long, overlapping relationships involved in investing. Manually entering information was a burden. Inconsistent use made the information less useful. A tool could become another chore for the very people it was supposed to help.
Zhou led Affinity's technical teams while Goel led its business teams at that stage. Their division of work gave the company two routes into the same question: could the software capture useful context without continually asking a busy professional to become a clerk? Getting the record right mattered because a firm could only act on the relationships it could actually see.
Affinity connects email and calendars, structures interaction data, and combines it with information about people and companies. It can help identify a colleague with a path to an introduction and keep relationship records current. In his writing about traditional CRM, Zhou argues that recording interactions leaves an important gap: understanding the nature of a relationship and its connections to other relationships.
The distinction is easy to recognize outside an investment firm. Knowing a person's name is a small convenience. Knowing who can approach them with credibility is a practical advantage. Software can arrange the evidence. Someone still has to decide whether the request is sensible, considerate, and worth making. A warm introduction remains an introduction between people.
- 01 · CaptureEmail & calendar interactions
- 02 · ConnectPeople, companies & relationship context
- 03 · ActFind a path to an introduction
An office is a better classroom than a pitch deck
Early on, the founders sometimes worked from customers' offices. Zhou describes watching users encounter friction, asking for feedback immediately, and changing the product alongside them. Some problems they had ranked highly turned out to be tolerable annoyances. Repeated observation helped them separate an attractive feature from something a customer would depend on.
They also agreed on success criteria with individual customers. Some measures were concrete, such as usage and automated data entry; others translated a customer's assessment into a simple score. Internally, daily usage became a goal. The ambition was a CRM people would actually return to. An enthusiastic meeting could not substitute for evidence that the software belonged in the routine.
That is an unglamorous way to learn, which is part of its appeal. A presentation gives its author control over the order of events. A customer using a product supplies a less accommodating editor. Confusion appears exactly where it appears. The button that looked obvious in the demonstration receives no special courtesy on a Tuesday afternoon.
Zhou's own public language could be more exuberant. In his announcement that Affinity was leaving beta, he described more than three years of work and pointed to investment teams already using it. The finished announcement carried the confidence of a launch. Behind it was the slower activity that launches tend to conceal: listening long enough to have something useful to announce.
Recognition, capital, and the work after the applause
Forbes named Zhou and Goel to its 2019 30 Under 30 list in Enterprise Technology. Its profile described their use of AI and natural language technology to expand traditional CRM, integrating communications, calendars, and outside information. At that point, it reported more than $13.5 million raised. The recognition attached their names to a specific piece of work, rather than simply to the familiar romance of leaving college.
In September 2021, Affinity announced an $80 million Series C led by Menlo Ventures, bringing total funding to $120 million. Reporting at the time put its customer base above 1,700 across 70 countries. Menlo partner Tyler Sosin had met the founders earlier; the firm later returned to Affinity as a customer looking for a more modern system. The relationship eventually included investment.
These are company milestones, and they should stay company milestones. They describe resources and adoption around something Zhou helped build. They do not reveal his personal wealth, nor do they finish the story. A funding round supplies room to work. It also increases the number of people relying on the work to continue.
By early 2022, Zhou wrote that Affinity's team had more than doubled to 200 and highlighted releases including Affinity Analytics and Affinity Data. He talked about the intentional effort required to build the team, culture, product, and service together. Growth multiplied the responsibilities around the original insight. The founders could no longer be the answer to every question.
Affinity's workplace recognition adds another piece of context. Inc. listed it among its 2023 Best Workplaces and recorded its emphasis on caring personally, taking pride in work, learning, and open-mindedness. A company selling relationship software has an unusually obvious test at home. Its own employees have relationships to manage, too.
The software should leave you time for people
Zhou's view of automation has a boundary. In a 2018 interview, he said, “Technology will never replace human interaction.” He described machines handling repetitive work and analysis so people could spend more time with prospects, clients, and investors. He was also interested in natural language processing, the branch of computing that deals with human language.
His personal productivity advice was correspondingly plain: “stop multitasking.” He said dividing his attention made work slower and reduced its quality. It is a pleasingly modest prescription from someone building software to make complex networks easier to navigate. Even a very well connected person can only give their attention to so much at once.
By 2022, he was describing relationship insights appearing within the tools people already used: browsers, email clients, Salesforce, and other everyday work surfaces. His aspiration extended beyond a destination app. If useful context could meet a professional where the work happened, it could reduce another small interruption in a day already full of them.
His writing for Preqin about private capital in 2025 kept that attention on practical value. He discussed a market shaped by cautious deployment, difficult exits, and the need for firms to distinguish themselves. The setting was finance; the recurring interest was how people could use information to make their work more deliberate. Relationships had to produce something beyond a larger collection of contacts.
“Technology will never replace human interaction.”Ray Zhou · 2018
A new CEO arrives through the network
In May 2024, Affinity named Ken Fine its CEO. Zhou and Goel stepped down as co-CEOs and remained co-founders and board members. The introduction had begun with a search for an independent board member. Their network referred Fine; repeated conversations changed the shape of the opportunity. A company organized around introductions had found its next chief executive through one.
The founders described being impressed by his ability to align teams, develop new product lines, and scale businesses. They planned to spend more time with customers, evangelizing the vision, and helping grow the team. In the appointment announcement, Zhou spoke about the need for experience scaling enterprise software. The role changed while the relationship with Affinity continued.
That makes a fitting place to leave him: still close to the company, still talking about the work, and willing to let a new operator take the chief executive's chair. His April 2025 conversation on Platform Builders returned to the problems founders solve and how software businesses adapt as AI changes their market. The original curiosity had further territory to cover.
The customer who asked for a price had supplied an early lesson in dependence. Years later, the leadership handoff supplied a different lesson about sharing responsibility. Between those moments, Zhou helped turn everyday communications into a working product for professional networks. The idea is technical. Its tests remain wonderfully ordinary: does someone use it, does it help, and will they ask you to keep it going?