> For the complete documentation index, see [llms.txt](https://learn.doubletick.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.doubletick.io/get-started-with-doubletick.md).

# Get Started with DoubleTick

- [Prerequisites for Onboarding](https://learn.doubletick.io/get-started-with-doubletick/prerequisites-for-onboarding.md): Learn about the essential requirements before starting the onboarding process with DoubleTick.
- [Onboarding](https://learn.doubletick.io/get-started-with-doubletick/onboarding.md): Connect your WhatsApp Business number to DoubleTick using Cloud API or Coexistence.
- [Onboard a phone number on Cloud API](https://learn.doubletick.io/get-started-with-doubletick/onboarding/onboard-a-phone-number-on-cloud-api.md): Learn how to onboard a WhatsApp phone number onto DoubleTick using Meta's Cloud API, from logging into the platform to confirming a successful connection.
- [Onboard a phone number on Coexistence](https://learn.doubletick.io/get-started-with-doubletick/onboarding/onboard-a-phone-number-on-coexistence.md): Learn how to connect an existing WhatsApp Business number to DoubleTick using Coexistence (Embedded Signup), from logging in to confirming a successful connection.
- [How to bulk onboard numbers](https://learn.doubletick.io/get-started-with-doubletick/onboarding/how-to-bulk-onboard-numbers.md): Learn how to onboard multiple WhatsApp numbers at once using DoubleTick's Bulk Onboarding flow, from adding numbers to downloading the final report.
- [Onboard an additional WABA on Cloud API](https://learn.doubletick.io/get-started-with-doubletick/onboarding/onboard-an-additional-waba-on-cloud-api.md): Learn how to onboard an additional WhatsApp API number on DoubleTick using Meta's Embedded Signup process, from starting the flow to confirming a successful connection.
- [Onboard an additional WABA on Coexistence](https://learn.doubletick.io/get-started-with-doubletick/onboarding/onboard-an-additional-waba-on-coexistence.md): Learn how to onboard an additional WhatsApp number on DoubleTick using Coexistence (Embedded Signup), from logging in to confirming a successful connection.
- [Migration](https://learn.doubletick.io/get-started-with-doubletick/migration.md): Move your WhatsApp number to DoubleTick while retaining its business setup.
- [API to API migration guide](https://learn.doubletick.io/get-started-with-doubletick/migration/api-to-api-migration-guide.md): Learn how to migrate an existing WhatsApp Cloud API number from another API provider to DoubleTick while keeping the same phone number.
- [Coexistence to coexistence migration guide](https://learn.doubletick.io/get-started-with-doubletick/migration/coexistence-to-coexistence-migration-guide.md): Learn how to migrate a WhatsApp number that's in Co-existence mode with another provider to Co-existence mode on DoubleTick, including chat history transfer.
- [Coexistence to Cloud API migration guide](https://learn.doubletick.io/get-started-with-doubletick/migration/coexistence-to-cloud-api-migration-guide.md): Learn how to move a WhatsApp number from Coexistence to Cloud API on DoubleTick, from deleting the WhatsApp Business App account to reconnecting via Embedded Signup.
- [Cloud API to CoEx migration guide](https://learn.doubletick.io/get-started-with-doubletick/migration/cloud-api-to-coex-migration-guide.md): Learn how to move a WhatsApp number from Cloud API to Coexistence on DoubleTick, including the mandatory 7-day WhatsApp Business App waiting period.
- [Security and Compliance](https://learn.doubletick.io/get-started-with-doubletick/security-and-compliance.md): See how DoubleTick's EU GDPR compliance, ISO 27001 certification, and SOC 2 compliance work together to keep your business and customer data secure.


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