CRM integration is the work of connecting your website's lead capture, contact forms, checkout, and support touchpoints to the system your sales team actually lives in — Salesforce, HubSpot, Pipedrive, Zoho, or whatever else holds the customer record. Done well, every form submission lands as a contact record with the right tags, the right source attribution, and the right owner, ready for a follow-up that doesn't require anyone to copy data between systems.
I think of CRM integration as plumbing, not magic. The interesting decisions aren't about which API to call — they're about what data should travel, how duplicates should resolve, and what happens when a record fails validation on the CRM side. Most failed integrations I'm asked to fix were built without a clear answer to those three questions, and the symptom is usually the same: leads going missing, duplicate records, sales reps re-entering data by hand.
The technical layer can be a direct API call, a webhook, an iPaaS tool like Zapier or Make, or a packaged WordPress plugin. For low-volume sites, Zapier is fine. For higher-volume sites or anything where data integrity matters (regulated industries, B2B with long sales cycles), a direct integration via the CRM's official API is worth the engineering time — Zapier is rate-limited and silent failures are easy to miss.
The thing worth getting right early is source attribution. If every lead arrives in the CRM tagged with which campaign or page brought them in, every later report is easy. If they don't, no amount of dashboard work will recover the picture.