Google and Microsoft Threaten Calendly
Calendly
The real threat is not that Google and Microsoft have better scheduling products, it is that they can make scheduling feel free, native, and already deployed. For a solo user or a 50 person company already living in Google Calendar or Outlook, built in booking removes one more paid app from the stack. That puts pressure on Calendly at the low end, where convenience and zero incremental spend matter more than workflow depth.
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Google and Microsoft both now offer native booking pages inside their calendar suites. Google Calendar lets users create appointment schedules, share booking pages, collect Stripe payments, and send reminders. Microsoft Bookings ties directly into Microsoft 365 calendars and is included with several business and enterprise plans, so the buyer often sees it as already paid for.
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Calendly still wins where scheduling is part of a larger revenue workflow, not just a free calendar utility. Its product goes beyond picking a time slot into pooled availability, routing, embeds, CRM and ATS integrations, notifications, and team workflows for sales, recruiting, and customer success. That is why it has kept growing upmarket, reaching $249M ARR in 2023 and an estimated $349M in 2024.
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The bundle matters most in prosumer and SMB accounts because those customers buy suites, not best of breed point tools. Calendly's defense is that it works across both Google and Microsoft environments and already had adoption in 86% of the Fortune 500 as of September 2023, which makes it easier to expand from a shared link into standardized enterprise scheduling and lead routing.
This heads toward a split market. Basic scheduling will be absorbed into productivity bundles, while standalone winners will own the higher value layer around routing, qualification, handoff, and revenue workflows. Calendly's path is to become less like a booking link and more like scheduling infrastructure for customer facing teams.