Handshake - the Comtau journal of CRM integration engineering https://comtau.com/crm/blog/ Handshake, the Comtau journal of CRM integration engineering: CRM APIs, data synchronization, migration and integration architecture, explained in depth. en-us Wed, 28 Oct 2026 00:00:00 GMT ERP vs CRM: What Each System Owns and How to Connect Them https://comtau.com/crm/blog/erp-vs-crm/ https://comtau.com/crm/blog/erp-vs-crm/ ERP vs CRM explained by what each system owns: customers, deals, orders, invoices and stock. Where they overlap, who owns which field, and how to sync them. Integration architecture Wed, 28 Oct 2026 00:00:00 GMT How to Build a CRM API Integration That Survives Production https://comtau.com/crm/blog/how-to-build-a-crm-api-integration/ https://comtau.com/crm/blog/how-to-build-a-crm-api-integration/ A step-by-step guide to building a CRM API integration: service authentication, incremental sync, idempotent writes, webhooks, rate limits and testing. CRM APIs & sync Wed, 28 Oct 2026 00:00:00 GMT How to Migrate CRM Data: A Step-by-Step Plan With Reconciliation https://comtau.com/crm/blog/how-to-migrate-crm-data/ https://comtau.com/crm/blog/how-to-migrate-crm-data/ How to migrate data from one CRM to another: inventory, mapping spec, deduplication, load order with external IDs, trial loads, reconciliation and cutover. CRM data & migration Wed, 28 Oct 2026 00:00:00 GMT Integration Platforms vs Custom Integration: How to Choose for CRM Data Flows https://comtau.com/crm/blog/integration-platforms-vs-custom-integration/ https://comtau.com/crm/blog/integration-platforms-vs-custom-integration/ A decision framework for CRM integrations: when native connectors, integration platforms (iPaaS) or custom code fit, judged on volume, logic and failures. Integration architecture Wed, 28 Oct 2026 00:00:00 GMT Salesforce Integration Patterns: APIs, Events and Architecture Decisions https://comtau.com/crm/blog/salesforce-integration/ https://comtau.com/crm/blog/salesforce-integration/ Salesforce integration explained by pattern: request and reply, fire and forget, batch sync, remote call-in and change events, with the right API for each. CRM APIs & sync Wed, 28 Oct 2026 00:00:00 GMT What Is a CRM Database? Objects, Relationships and Identifiers Explained https://comtau.com/crm/blog/what-is-a-crm-database/ https://comtau.com/crm/blog/what-is-a-crm-database/ What a CRM database contains: accounts, contacts, deals and activities, how they relate, and the identifiers, history and permissions integrations depend on. CRM data & migration Wed, 28 Oct 2026 00:00:00 GMT