We are getting ready to implement Salesforce Web-to-Case and are now at a crossroads in deciding if we should use Marketo or SFDC forms to capture the user data. A little bit about our integration: we sync every lead & contact that is created in SFDC to Marketo, but only sync SQL to SFDC from Marketo. I am concerned that if we have a SFDC form, we'll end up with a duplication issue if we have a large number of people fill out the form that are leads in Marketo, but not previously known to SFDC. If we do end up using a Marketo form, can someone point me to documentation on the best way to implement? I've read through some community posts that talk about using webhooks and API calls and I've read the Marketo documentation on creating webhooks, but I've never created one before. Are webhooks the ideal method to use for this? Any other thoughts, caveats, best practices to share?