Stripe: payments, subscriptions, refunds
Google Workspace (Gmail, Calendar, Contacts, Business Profile)
Microsoft 365 (Outlook Mail + Calendar)
Facebook & Instagram (Pages, Messenger, Lead Ads, Conversions API)
Zoom and other video conferencing
Zapier and Make.com (low-code automation)
Webhooks (sending and receiving real-time data)
Public API (developer-grade access)
