> 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/onboarding.md).

# Onboarding

Connect your WhatsApp Business number to DoubleTick using Cloud API or Coexistence.

Everything you need to onboard a new WhatsApp number on DoubleTick, whether you're using Cloud API or Coexistence. Depending on your setup, you can connect a brand-new number, bring an existing WhatsApp Business number across using Coexistence, onboard several numbers together in one go, or add another WABA to an account you've already set up.

#### In this section

* [Onboard a phone number on Cloud API](/get-started-with-doubletick/onboarding/onboard-a-phone-number-on-cloud-api.md)
* [Onboard a phone number on Coexistence](/get-started-with-doubletick/onboarding/onboard-a-phone-number-on-coexistence.md)
* [How to bulk onboard numbers](/get-started-with-doubletick/onboarding/how-to-bulk-onboard-numbers.md)
* [Onboard an additional WABA on Coexistence](/get-started-with-doubletick/onboarding/onboard-an-additional-waba-on-coexistence.md)
* [Onboard an additional WABA on Cloud API](/get-started-with-doubletick/onboarding/onboard-an-additional-waba-on-cloud-api.md)


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