Based on our experience we recommend connecting & integrating your WhatsApp number via the 360dialog provider, as this integration allows you to connect any phone number, whereas to be able to connect a WhatsApp number via Twilio, your phone number has to be purchased from Twilio directly. The integration via 360dialog is also faster as there are no additional approval processes needed as from Twilio's side. On the opposite, the Twilio method tends to be cheaper due to the high monthly fee of at least 49€/month for a 360dialog account.