How to Self-Host Cal.diy in AWS with Pre-Configured AMI

Introduction

In an era where time is a precious commodity, efficient scheduling is crucial. Cal.diy, the open-source community edition of the Cal.com scheduling platform, gives you a self-hostable way to manage meetings and appointments on your own infrastructure. This article explores Cal.diy, highlighting its versatility and user-friendly design.

The Power of Self-Hosting: Control and Customization at Your Fingertips

Self-hosting offers control, customization, and independence. By self-hosting Cal.diy, you can tailor the service to your specific needs and keep your scheduling data on infrastructure you manage. This approach enhances data sovereignty and provides flexibility in managing resources, though Cal.diy is officially recommended for personal and non-production use rather than mission-critical business deployments.

Cal.diy and AWS: A Synergistic Partnership Powered by Meetrix

The combination of Cal.diy and Amazon Web Services (AWS), facilitated by Meetrix, represents a simple way to get a self-hosted scheduling instance running quickly. This partnership combines Cal.diy's flexibility with AWS's scalable infrastructure. Meetrix's expertise bridges these platforms, offering a seamless integration that amplifies their strengths and provides a self-hosted scheduling solution you control end to end.

What is Cal.diy?

The Open-Source, Self-Hostable Edition of Cal.com

Cal.diy is the open-source, MIT-licensed community edition of the Cal.com scheduling platform, offering a comprehensive and user-friendly way to self-host meeting and appointment scheduling. In a world where efficient time management is key to success, Cal.diy provides an essential service for individuals and small teams who want full control over their own deployment.

Key Features and Functionalities

At its core, Cal.diy is a versatile tool that boasts a range of features aimed at simplifying the scheduling process:

• Intuitive Interface: A user-friendly design ensures ease of use for both organizers and participants, making scheduling hassle-free.
• Flexible Integration: Seamlessly integrates with various calendars and digital platforms, ensuring compatibility and synchronization across devices and services.
• Customizable Meeting Types: Users can create different types of meetings, from one-on-one sessions to group events, each with its unique settings and parameters.
• Time Zone Intelligence: Automatically detects and adjusts for time zone differences, a useful feature for distributed teams and remote work.
• Advanced Availability Settings: Allows users to set their availability with precision, avoiding overbooking and scheduling conflicts.
• Automated Reminders and Follow-ups: Sends automated email or SMS reminders to participants, reducing no-shows and enhancing engagement.
• API Access: Offers developers API access, enabling them to integrate and extend the functionality of their self-hosted instance.

From Cal.com Open Source to Cal.diy

Cal.diy carries forward the open-source codebase that previously shipped as part of Cal.com. As of April 2026, Cal.com's hosted product moved to a closed-source model, and the self-hostable code was relaunched separately as Cal.diy under the MIT license. This evolution means Cal.diy is now the dedicated home for anyone who wants to run the platform on their own servers, while Cal.com remains the company's fully managed SaaS offering.

Cal.diy vs. Cal.com SaaS

If you need a production-grade, fully managed scheduling platform with official commercial support, Cal.com is the SaaS product to use. If you want to self-host on your own infrastructure for personal projects, internal tools, or non-production use, Cal.diy is the open-source option this guide focuses on.

Data Control with Self-Hosting Cal.diy

Data Privacy and Control: Using Meetrix's AMI to self-host Cal.diy on AWS lets you keep your scheduling and appointment data on infrastructure you control, rather than relying on a third-party SaaS provider.

Custom Security Measures: Self-hosting Cal.diy allows you to implement your own security protocols, including encryption and access controls, around your scheduling data. As with any self-hosted, non-production-oriented open-source project, you are responsible for hardening, monitoring, and patching your own deployment.

Deployment Support from Meetrix

• Deployment Support: Meetrix provides guidance on deploying Cal.diy via its pre-configured AMI, including best practices for configuration and setup.
• Integration and Customization: With Meetrix's support, you can customize Cal.diy to fit your scheduling needs and integrate it with your existing AWS infrastructure.
• Setup Assistance: Meetrix helps with the initial setup and configuration of your Cal.diy instance on AWS.

Calendly vs. Cal.diy: A Comprehensive Comparison

When it comes to scheduling and appointment management tools, Calendly and Cal.diy represent two very different approaches. Each platform offers unique features and benefits, making them suitable for different user needs. Here's a detailed comparison to help you understand which tool might be the best fit for your requirements.

Feature/Aspect	Calendly	Cal.diy
User Interface	Intuitive and straightforward.	User-friendly with additional customization options.
Integration Capabilities	Strong with platforms like Google Calendar, Office 365, Zoom.	Similar capabilities with a focus on open-source integrations.
Pricing Structure	Free basic plan; paid plans for more features.	Free and open source; you cover your own hosting costs.
Customization	Limited customization options.	High degree of customization available.
API Access	Provides API access, somewhat limited.	Extensive API, ideal for developers.
Self-Hosting Options	Primarily cloud-based, no self-hosting.	Self-hosted only, giving you full data and infrastructure control.
Intended Use	Production-ready cloud service for individuals and teams.	Recommended for personal and non-production self-hosting.
Market Position	Well-established with strong market presence.	Community edition of Cal.com, popular in open-source communities.
Target Audience	Individual professionals, businesses needing straightforward scheduling.	Tech-savvy users and developers comfortable managing their own server.
Support and Community	Reliable support, large user community.	Community-driven support; no official commercial SLA.

Conclusion

Self-hosting Cal.diy on AWS provides a flexible, self-managed way to run your own scheduling platform. By following this guide, you can leverage AWS infrastructure to gain full control over your data and customize the platform to your specific requirements. Keep in mind that Cal.diy is best suited to personal projects and non-production use; if you need a production-grade, fully supported scheduling platform, the Cal.com SaaS product is the better fit.