This document summarizes a Marketo webinar about integrating Marketo with other systems. It discusses the benefits of integration for aligning marketing and sales, visibility into data updates and opportunities. It also addresses questions about when to sync leads between Marketo and a CRM and considerations around both approaches. Finally, it outlines the different integration options including native integrations with Salesforce and Dynamics, custom integrations using APIs, and connectors from various vendors. It provides information on Marketo's SOAP and REST APIs and best practices for custom integrations.