What are the options I can use for WhatsApp Business?

WhatsApp has launched 2 official solutions for businesses: 

Usually aimed at medium to large enterprises, but small companies can use it, too. From the enterprise point of view, it may be unclear what business solution to use. Small companies may need scalability, too; which the app does not provide. The choice of the most appropriate WhatsApp Business solution transcends the size of a company; it's also about how embedded the WhatsApp Business solution will be in your customer engagement, the intensity of interactions, and the scalability you need. Hence, companies usually considered small can also benefit from the WhatsApp Business API. The WhatsApp Business API is provided directly by WhatsApp or via official solution providers like tyntec.