Productivity

How to build Calendly

Scheduling automation with calendar sync, booking pages, team scheduling, and workflow integrations.

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Features (10)

Booking page with availability

Calendar sync (Google, Outlook)

Team scheduling (round-robin)

Buffer times between meetings

Custom event types

Payment collection

Email reminders

Workflow automation

Embeddable widget

Analytics

User Stories (5)

As a user, I can share a booking link and let others schedule

As a team, I can set up round-robin scheduling

As a user, I can sync with Google Calendar and Outlook

As a host, I can collect payments at booking

As a user, I can embed scheduling on my website

Suggested Tech Stack

ReactRuby on RailsPostgreSQLRedisElasticsearchStripeGoogle Calendar APIAWSKafka

Non-Functional Requirements

Category	Requirement	Target
Performance	Booking page load	< 1s TTFB for scheduling widget
Availability	Booking system	99.99% — missed bookings = lost revenue for users
Security	Calendar data	OAuth2 with minimal scopes, SOC2 compliant

Release Milestones

MVPBasic Scheduling

Booking pageGoogle Calendar syncEmail confirmationsCustom availability

v1.0Team & Payments

Team scheduling (round-robin)Stripe paymentsBuffer timesCustom brandingReminders

v2.0Automation

Workflow automationRouting formsEmbeddable widgetAnalyticsSalesforce integration

Success Metrics

Booking completion rate: > 80% of page visits

Time to first booking: < 24 hours after signup

Team plan adoption: > 20% of active users

NPS: > 60

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