Google Things-To-Do Booking Integration

I need to connect my activity-booking inventory to Google Things to Do so travellers can see real-time availability, pricing, and complete their reservation without leaving the Google results page. The project covers the full GTTD Activity Booking flow—content feed, availabilities, lead-times, pricing rules and the booking/confirmation API hand-shake—along with synchronising those same activities on major travel websites.

Key deliverables
• Build and deploy the complete Google Things to Do Activity Booking integration, compliant with Google’s latest specs.
• Map my existing product IDs, schedules and allotments to Google’s schema and push live content, availability and price feeds.
• Implement booking, modification and cancellation endpoints with robust error handling and logging.
• Extend the connector so the same feed can be consumed by leading travel websites (e.g. Expedia, Booking.com, Airbnb or similar) using their respective API formats.
• Provide clear technical documentation and a short hand-over session so my team can maintain the integration.

Acceptance criteria
• Activities appear in Google search and on the “Things to Do” module with up-to-date stock and pricing.
• End-to-end test bookings succeed on both Google and at least one connected travel website.
• Response times and error rates meet Google performance thresholds.

Please outline your proposed tech stack, estimated timeline, and any past experience with GTTD or comparable travel APIs when you reply.