WhatsApp Business API Automation for Automatic Catalog Delivery

We need to implement an initial WhatsApp automation using the official WhatsApp Business API, either directly through Meta Cloud API or through an official provider such as 360Dialog, Gupshup, WATI or Take Blip. We currently receive a high volume of leads, around 200 leads per day per WhatsApp account, so we need a fast and reliable implementation. The goal is to automatically send our puppy catalog to new leads. When a new lead contacts us on WhatsApp, the automation should automatically send: A welcome message The updated catalog of available puppies, with HD/good-quality videos and/or photos, each media item with its own caption A final message with additional details and a call to action for human follow-up After this initial flow, the conversation should remain available for our team to take over manually. The catalog must be easy to update, since available puppies change frequently. We need to be able to update videos, photos, captions and puppy information without depending on the developer every time. The tool should also allow trigger configuration. For example, triggering the automation only for leads coming from paid ads, or for specific WhatsApp numbers, campaigns or lead sources, whenever technically possible to identify the origin of the contact. The automation must work with multiple WhatsApp numbers/accounts, using the same core flow. As a future phase, we want the structure to support automatic follow-up for leads who do not reply after 24 hours, including follow-up messages and buttons such as “too expensive”, “didn’t like any puppy” or “just researching”. This future phase does not need to be implemented immediately, but the architecture should allow it later. We are looking for someone with real experience in official WhatsApp Business API, automatic media sending, webhooks, message templates, lead-source triggers and scalable architecture for high message volume.