{"id":1655,"date":"2025-06-28T08:22:48","date_gmt":"2025-06-28T15:22:48","guid":{"rendered":"https:\/\/www.ghosh.com\/blog\/?p=1655"},"modified":"2025-06-28T09:51:37","modified_gmt":"2025-06-28T16:51:37","slug":"when-side-hustles-eclipse-the-core-business-startup-pivot-success-stories","status":"publish","type":"post","link":"https:\/\/www.ghosh.com\/blog\/when-side-hustles-eclipse-the-core-business-startup-pivot-success-stories\/","title":{"rendered":"When Side Hustles Eclipse the Core Business: Startup Pivot Success Stories"},"content":{"rendered":"

Startups often pour their hearts into a big idea\u2014only to discover that a side project<\/em> or internal tool<\/em> becomes the real winner. In fact, some of tech\u2019s biggest successes began as side hustles that outgrew the original venture. Why do these offshoots sometimes win? Often it\u2019s because they solve a genuine pain point (sometimes an internal one) with clear product\u2013market fit and the potential for virality. In this post, we\u2019ll explore several real-world founder pivot stories\u2014told founder-to-founder\u2014where a secondary project surpassed the main business, backed by timelines, data, and documented decisions.<\/p>\n

Why Side Projects Sometimes Win<\/h2>\n

Side hustles and internal tools tend to be born out of necessity. A team encounters a problem while building the main product and hacks together a solution. That solution, unconstrained by the original business model, can be more laser-focused on a real need<\/strong>. When others have the same need, the side project can spread organically<\/strong>. Unlike the core idea (which might be ahead of its market or solving a problem users don\u2019t care enough about), the side project usually has baked-in demand<\/em>. Founders who notice this dynamic and pivot decisively can transform a dud into a breakout success.<\/p>\n

Quick Comparison: Successful Side-Hustle Pivots<\/h2>\n

To set the stage, here\u2019s a snapshot of top startups where a side project overtook the original business:<\/p>\n<\/div>\n

\n\n\n\n\n\n\n\n\n\n\n
Startup (Pivot)<\/th>\nOriginal Business<\/th>\nPivot Product\/Tool<\/th>\nPivot Year<\/th>\nOutcome (Traction\/Value)<\/th>\n<\/tr>\n<\/thead>\n
Slack<\/strong> (Tiny Speck)<\/td>\nOnline game \u201cGlitch\u201d<\/td>\nInternal messaging tool<\/td>\n2013<\/td>\n120k daily users in 6 months; 12M+ DAUs by 2019; acquired for $27.7\u202fB in 2021.<\/td>\n<\/tr>\n
Twitter<\/strong> (Obvious Corp.)<\/td>\nPodcast platform \u201cOdeo\u201d<\/td>\n\u201cTwttr\u201d microblogging app<\/td>\n2006<\/td>\n60k tweets\/day at launch\u2019s first SXSW; 200M+ users by 2013; IPO valued $31\u202fB.<\/td>\n<\/tr>\n
Discord<\/strong> (Hammer & Chisel)<\/td>\nMobile game \u201cFates Forever\u201d<\/td>\nVoIP chat for gamers<\/td>\n2015<\/td>\n100k users in first year; 130M users by 2018; 150M MAUs by 2021, valued $15\u202fB.<\/td>\n<\/tr>\n
Instagram<\/strong> (Burbn)<\/td>\nCheck-in app (Burbn)<\/td>\nPhoto-sharing mobile app<\/td>\n2010<\/td>\n1\u202fM users in 3 months; 10\u202fM within a year; 30\u202fM by acquisition in 2012 ($1\u202fB buyout).<\/td>\n<\/tr>\n
AWS<\/strong> (Amazon)<\/td>\nAmazon retail (e-commerce)<\/td>\nOn-demand cloud infrastructure<\/td>\n2006<\/td>\n$0 to $7B rev. in 10 years; by 2016 >50% of Amazon\u2019s profit; ~$80B\/yr revenue by 2023, underpinning much of the web.<\/td>\n<\/tr>\n
Groupon<\/strong> (The Point)<\/td>\nSocial activism platform<\/td>\nLocal group deals site<\/td>\n2008<\/td>\nFastest to $1\u202fB valuation (16 months); IPO in 2011 at ~$12\u202fB; peaked at 35M users by 2010.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Table: Examples of side hustles or internal tools that surpassed the original startup idea, with timelines and outcomes.<\/em><\/p>\n

Slack: From Failed Game to Enterprise Chat Unicorn<\/h2>\n

Original vision:<\/strong> Stewart Butterfield\u2019s Tiny Speck studio was building Glitch<\/em>, a whimsical online game launched in 2011. Despite $15M in funding and a talented team, Glitch struggled\u2014it was too slow, Flash-based, and \u201cnot fun\u201d enough to retain players. By late 2012, Butterfield saw the writing on the wall and shut the game down, even offering to return remaining funds to investors.<\/p>\n

The side project:<\/strong> To coordinate their geographically dispersed dev team, Tiny Speck had built an internal messaging tool \u2013 basically a souped-up chat room with searchable history. Butterfield and his team loved<\/em> this tool and realized they \u201cwouldn\u2019t work without a system like this again,\u201d thinking maybe other companies would like it too. Instead of dissolving Tiny Speck, they convinced investors to let them pivot to develop this communication platform.<\/p>\n

Pivot and growth:<\/strong> In early 2013 the company rechristened itself Slack<\/strong> and focused entirely on the team chat product. Slack publicly launched in Feb 2014, and growth was immediate. Within weeks, it saw 5\u201310% weekly<\/em> growth, reaching 120,000 daily active users by that summer. Paying customers signed up quickly as well, with 38,000 paid users by August 2014 (93% of all users retained). Less than a year from launch, Slack hit 60k daily users and 15k paid seats. The product\u2019s timing and design struck a nerve: tech firms and enterprises alike adopted Slack as an \u201cemail killer,\u201d drawn by its fun, game-like user experience and integrations. Venture capital followed: Slack raised a $42M Series C within months and reached a $1B+ valuation shortly after.<\/p>\n

Outcome:<\/strong> Slack\u2019s internal tool had clearly eclipsed the original game. Over the next years Slack grew to millions of users (exceeding 12 million daily users by 2019) and ~$400M annual revenue by 2019. In 2021, Salesforce acquired Slack for $27.7\u202fbillion<\/strong>\u2014a massive outcome that vindicated Butterfield\u2019s pivot. (In a twist, this was Butterfield\u2019s second<\/em> such pivot: in 2002 he spun a failed game into the photo-sharing site Flickr, proving lightning can strike twice.)<\/p>\n

Twitter: From Odeo\u2019s Side Project to Global Town Square<\/h2>\n

Original vision:<\/strong> In 2005, entrepreneur Evan Williams founded Odeo<\/em>, a platform for podcasting. But within months, Apple\u2019s iTunes launched podcast support, effectively making Odeo obsolete. With their main product going nowhere, Williams asked his small team for new ideas to salvage the company.<\/p>\n

The side project:<\/strong> An engineer named Jack Dorsey pitched a simple status-sharing app via SMS\u2014essentially a micro-blog where you could broadcast short updates to friends. The idea (code-named \u201cTwttr\u201d) was built as an experimental side project in early 2006, and Jack sent the first-ever tweet (\u201cjust setting up my twttr\u201d) on March 21, 2006.<\/p>\n

Pivot and growth:<\/strong> Twttr officially launched to the public on July 15, 2006, still as a side feature under Odeo. By the fall of 2006, it was clear this little side project was the only thing with traction\u2014Odeo\u2019s podcast portal was dead in the water. Williams acquired Odeo\u2019s assets back from investors and refocused the company (renamed Obvious Corp.) entirely on the new microblogging service, which soon became Twitter<\/strong>. Usage started modestly, but a turning point came at South by Southwest (SXSW) in March 2007: conference-goers embraced Twitter en masse, sending over 60,000 tweets per day during the event. This publicity snowballed user growth. By 2011\/2012, Twitter became a global phenomenon used for everything from breaking news to celebrity updates. By 2013, Twitter reported over 200 million active users and more than 2,000 employees. In November 2013, Twitter went public at a valuation just north of $31\u202fB\u2014not bad for a side project born out of a company in crisis.<\/p>\n

Why it won:<\/strong> Twitter\u2019s one-to-many messaging hit an unmet need for real-time public conversation (a far broader vision than Odeo\u2019s niche podcast tool). The simplicity and novelty led to viral adoption, far eclipsing anything Odeo attempted. In short, product\u2013market fit<\/strong> was astronomically better for Twitter\u2019s \u201cstatus updates\u201d than for Odeo\u2019s original idea.<\/p>\n

Discord: Gamers\u2019 Chat Tool That Surpassed the Game<\/h2>\n

Original vision:<\/strong> In 2012, Jason Citron\u2019s gaming startup Hammer & Chisel set out to build Fates Forever<\/em>, an online multiplayer game for mobile tablets. Despite raising a sizable Series A and developing the game for years, Fates Forever never took off commercially. By 2014, Citron faced the reality that the game\u2019s prospects were dim.<\/p>\n

The side project:<\/strong> While making the game, Citron\u2019s team felt a constant pain point: existing voice chat for gamers was awful. Skype was a resource hog; TeamSpeak and Ventrilo were clunky to set up. So the team built a lightweight voice and text chat app<\/strong> for internal use during playtests. This tool allowed them (and a few beta players) to coordinate matches more easily.<\/p>\n

Realizing many other gamers had the same communication problem, Citron made a bold move in 2015: pivot entirely to the chat app<\/strong>, named Discord<\/strong>, dropping game development. In May 2015, Discord launched to the public with a simple value prop: free, high-quality voice and text chat for gamers, available on both desktop and mobile.<\/p>\n

Growth strategy:<\/strong> Early growth was slow until the Discord team did things that don\u2019t scale<\/em>: they personally engaged small gaming communities on Reddit. One pivotal moment came when Discord developers participated in a subreddit for Final Fantasy XIV, inviting gamers to try Discord and give feedback. When users saw developers actively chatting with them on Discord, word spread quickly. \u201cI just talked to the devs\u2026 It\u2019s really cool. Check it out,\u201d an early user posted\u2014an authentic endorsement that sparked a chain reaction. By focusing on one tight-knit group (hardcore gamers needing better comms) and delivering an amazing user experience<\/em> for them, Discord achieved grassroots virality.<\/p>\n

In the first few months, user numbers leapt from a few thousand to tens of thousands. By the end of 2015, Discord had 2,000+ users; a few months later (January 2016) 20,000; and by April 2016 over 100,000 users. From there, growth was explosive: Discord reached 3 million users in 2016 and 45 million by late 2017. Communities from other games (Minecraft, League of Legends, etc.) started adopting it, and the network effects kicked in\u2014if your friends or guild were on Discord, you joined too.<\/p>\n

Discord\u2019s user growth spiked in 2020 amid the pandemic and popular games like \u201cAmong Us,\u201d reflecting how a tool built for gamers expanded to mainstream communities.<\/em><\/p>\n

By 2018, Discord had over 130 million registered users and broadened beyond gaming; people began using it for study groups, clubs, even workplace teams. The once-side-project had clearly outshone the original game (which few remember). In 2021, Discord reportedly boasted 150 million monthly active users and attracted a funding round valuing it at $15\u202fB<\/strong> (having even turned down a $12B acquisition offer).<\/p>\n

Key lesson:<\/strong> Discord\u2019s origins as an internal fix for a painful problem gave it an authentic product\u2013market fit<\/strong> from day one. Gamers needed this solution, and once they had it, they enthusiastically promoted it to friends. The failed game never found its market, but the side-tool did\u2014in spectacular fashion.<\/p>\n

Instagram: Pivoting a Check-In App into a Photo Revolution<\/h2>\n

Original vision:<\/strong> Kevin Systrom\u2019s initial startup idea in early 2010 was Burbn<\/em>, a mobile app that combined location check-ins (\u00e0 la Foursquare) with social features. Users could check in, make plans, and post photos of what they were doing. Built as an HTML5 app, Burbn was ambitious but clunky and hadn\u2019t yet launched publicly beyond a prototype.<\/p>\n

The side project:<\/strong> In Burbn\u2019s beta tests, Systrom noticed a striking user behavior: people weren\u2019t using the check-in features much at all. Instead, they were mainly sharing photos<\/strong> of lattes, dogs, and daily life snippets. The photo feature was just one part of Burbn, but it was the only part users loved. Systrom, joined by co-founder Mike Krieger, made a gutsy call: strip away everything except photo sharing<\/strong>. They rebuilt the app from scratch with a focus on quick photo posting, filters, and social feeds\u2014this pivot project was dubbed Instagram<\/strong>. (The team even built a precursor app just to test filters, then folded that learning into Instagram.)<\/p>\n

Instagram launched on October 6, 2010 as an iPhone-only app. The founders weren\u2019t sure what to expect\u2014but 25,000 users signed up on day one<\/strong>. The app struck a nerve in the early smartphone market: it was simple, fast, and made mobile photos look great. Within 3 months Instagram hit 1 million<\/strong> users, purely through organic growth. By summer 2011 it had 5 million, then 10 million shortly after without any paid marketing. Users loved how easy it was to share and view snapshots of daily life.<\/p>\n

By early 2012, Instagram had around 27 million users on iOS alone. When Instagram finally released an Android app in April 2012, it gained over 1 million downloads in a day<\/strong> (showing the pent-up demand). Just a week later, in April 2012, Facebook stunned the industry by acquiring Instagram for about $1\u202fB (in cash and stock). At the time of acquisition\u2014only 18 months after launch\u2014Instagram had roughly 30 million users and just 13 employees. Many thought $1B for a tiny, revenue-less startup was insane, but history proved it a bargain: today Instagram has over 2 billion<\/strong> users and is one of Facebook\/Meta\u2019s core platforms.<\/p>\n

Why did the side project win?<\/strong> Burbn was trying to ride the check-in trend, but that market was crowded and the concept wasn\u2019t compelling enough. The photo-sharing pivot zeroed in on something people really<\/em> wanted to do on their new smartphones. By solving a clear user desire (sharing photos easily with friends) and making it fun (filters!), Instagram achieved instant virality that far eclipsed Burbn\u2019s prospects. The founders\u2019 decision to focus on their app\u2019s unexpected hit feature<\/em> made all the difference.<\/p>\n

AWS: Internal Infrastructure That Became Amazon\u2019s New Engine<\/h2>\n

Original context:<\/strong> In the early 2000s, Amazon was known primarily as an e-commerce retailer. As Amazon grew, its engineering teams had to build a lot of internal tools to scale the website\u2014data storage, computing, databases, etc. Under CEO Jeff Bezos\u2019s guidance, Amazon started re-organizing internally around common services around 2003. The company realized it had developed a core competency<\/em> in running reliable, scalable IT infrastructure to power its retail operations.<\/p>\n

The \u201cside\u201d idea:<\/strong> What if Amazon offered its internal infrastructure building blocks to external developers as a service? This idea emerged from an executive retreat in 2003: Bezos and lieutenant Andy Jassy saw that Amazon\u2019s expertise in compute, storage, and databases could fulfill a huge need for other businesses. At the time it was a radical notion\u2014Amazon was not a software vendor. Yet they quietly began developing this side initiative, codenamed Amazon Web Services (AWS)<\/strong>, over the next few years.<\/p>\n

Launch and growth:<\/strong> AWS launched its first services to the public in 2006, starting with S3 (cloud storage) and EC2 (virtual servers). Initially, it might have seemed like a niche experiment. But the timing was perfect: startups and enterprises were moving online fast and hated managing physical servers. By being first-to-market with modern cloud infrastructure, AWS quickly attracted developers with its pay-as-you-go model. Amazon\u2019s \u201cside business\u201d grew steadily under the radar. By 2015, AWS was generating billions<\/em> in revenue and was immensely profitable. In fact, in 2015\u20132016 AWS became the primary profit engine for Amazon: the AWS division contributed the majority of Amazon\u2019s operating income<\/strong> despite being only ~10% of total revenue. This trend continued \u2013 for example, in late 2024 AWS accounted for 15% of Amazon\u2019s sales but over 50% of its operating profits.<\/p>\n

Today, AWS is a behemoth that has far outshined Amazon\u2019s original retail business in terms of cloud market influence (if not total revenue). It\u2019s a $80+ billion\/year segment serving millions of customers from startups to Fortune 500 companies. Few remember that AWS started as an internal toolkit to help Amazon\u2019s retail site run better. Now it\u2019s the global backbone of cloud computing<\/strong>. Amazon\u2019s willingness to spin out and invest in this \u201cside project\u201d from 15+ years ago gave it a massive head start on competitors and ultimately redefined the company\u2019s trajectory.<\/p>\n

Groupon: Turning a Social Cause Platform into a $1B Deal Marketplace<\/h2>\n

Original vision:<\/strong> Andrew Mason\u2019s first startup in 2007, The Point<\/em>, was an online platform to mobilize people for collective action. The idea was to get groups to reach a \u201ctipping point\u201d for a cause or goal (like fundraising or petitions). The Point saw only modest traction in its early days in Chicago.<\/p>\n

The side project:<\/strong> Interestingly, one group of The Point\u2019s users tried leveraging the platform for a lighter goal: group discounts<\/strong>. They figured if enough people agreed to buy a product together, they could get a volume discount. Mason\u2019s former boss and seed investor, Eric Lefkofsky, noticed this quirky use-case gaining popularity and pushed to pivot entirely to \u201ccollective buying\u201d deals. In late 2008, the team spun out this concept as Groupon<\/strong> (short for \u201cgroup coupon\u201d).<\/p>\n

Groupon started by offering one daily deal in Chicago (their first was half-price pizzas at a local bar). The model was simple but effective: if a minimum number of people purchased the daily offer, everyone got the deal. Consumers loved the deep discounts and the novelty of the model, and local businesses loved the influx of guaranteed customers.<\/p>\n

Growth and outcome:<\/strong> The decision to focus on group deals proved incredibly successful. Groupon expanded city by city at breakneck speed. Within a year and a half, the staff grew from a few dozen to over 350. By October 2010 (not even two years in), Groupon was live in 150+ cities and had 35 million users subscribed. Remarkably, Groupon hit a $1 billion valuation just 16 months after launch<\/strong>, the fastest company ever to that benchmark at the time. Revenue was soaring\u2014by late 2010, Groupon was on pace to generate $1B in annual sales, the quickest to that milestone as well. In 2011, Groupon famously turned down a $6 billion acquisition offer from Google, opting to go public instead. Its IPO in November 2011 valued the company at around $12\u201313 billion.<\/p>\n

While Groupon\u2019s longer-term story had ups and downs (competition and scaling challenges eventually shrank its value), the pivot itself was undeniably a success in eclipsing the original idea. The Point\u2019s social activism concept never broke out, but Groupon\u2019s daily deals became a household name and a new e-commerce category. The key was zeroing in on the one use-case that users truly wanted<\/strong> (saving money with group discounts) and doing it far better than anyone else.<\/p>\n

Conclusion: Side-Hustle Lessons for Founders<\/h2>\n

As these stories show, a startup\u2019s Plan A isn\u2019t always the winner. But a side project born of genuine need can sometimes capture lightning in a bottle<\/strong>. For founders, a few takeaways stand out:<\/p>\n