Why API integrations matter
Most businesses use multiple software tools that don't talk to each other by default. A customer books via your website, but you manually enter the details into your CRM, then copy them again into your invoicing tool. API integrations eliminate this copy-paste workflow by connecting systems directly.
Common integration patterns
Webhooks: One system notifies another when something happens. "When a form is submitted, send the data to our CRM." This is event-driven and real-time.
Polling: One system periodically checks another for updates. Less elegant but works when webhooks aren't available.
Sync: Two systems keep their data in alignment. Changes in either system are reflected in the other. More complex but necessary when both systems are actively used.
Build vs buy
For standard connections (Stripe to Xero, form to Mailchimp), platforms like Zapier or n8n handle the integration without code. For custom APIs, proprietary systems, or complex data transformations, custom development gives you full control and better long-term cost efficiency.