I run a small agricultural business in Telangana and I want to reach my customers directly on their phones. The goal is to set up both WhatsApp Business and RCS messaging so I can send promotional text, rich images / videos, and periodic discount offers. Here is what I need from you: • End-to-end configuration of the WhatsApp Business API and an equivalent RCS channel, including number onboarding, template approval, and compliance with Meta and carrier policies. • Guidance on whether an off-the-shelf API gateway suits me or if a custom micro-service would be smarter. I’m open to whichever option keeps costs predictable and scales when my customer list grows. • A simple dashboard or clear REST/JSON endpoints that let me upload contacts, segment them, and trigger campaigns without writing new code each time. • Delivery reports and basic analytics so I can see who received and opened each campaign. • A short hand-off document (or screen-share) showing how to launch future promos myself. Acceptance criteria 1. Test messages (text, image, video, offer coupon) land successfully on sample Android devices via both WhatsApp Business and RCS. 2. Templates are approved and reusable. 3. I can trigger a broadcast from the provided interface / endpoint without your assistance. If you have recent experience integrating WhatsApp Business API, Google RCS, Twilio, Gupshup, or similar platforms, please outline the stack you’d recommend and any previous results you achieved. Looking forward to a smooth rollout that lets my farm updates reach customers faster and more visually.