Here is a 1-paragraph summary of the text: The recent webinar on "Personalizing Customer Engagements with the WhatsApp Business API" discussed the importance of WhatsApp as a channel for multinational organizations and shared best practices for marketing over WhatsApp, including ensuring proper opt-in, taking advantage of various entry points, and using WhatsApp as part of a larger multi-channel marketing strategy. The platform offers tools for businesses to maintain compliance when using the channel, such as end-to-end encryption, archiving, and retention capabilities. WhatsApp can be used to communicate with customers throughout their purchase journey to drive acquisition, conversion, and repeat purchase, and offering various entry points enables consumers to reach out on their terms. Integrating WhatsApp into a larger multi-channel marketing campaign helps consumers communicate with brands at any stage of their customer journey.