Adalo is built on a hosted Postgres database architecture that scales to 5,000,000+ monthly active users with modular, dedicated infrastructure. It supports external data sources including Airtable, Google Sheets, and Xano via REST API integrations, and connects to thousands of third-party services through Zapier and Make. The platform exposes Custom Actions that interact with external APIs (sending emails, SMS, webhooks), and its Component Marketplace allows developers to build and distribute custom components. Publishing pipelines handle native iOS (App Store) and Android (Google Play) compilation as well as responsive web deployment from a single codebase, achieving 99% average app uptime.