What are the implications of disabling the WordPress XML-RPC system?

If the XML-RPC option within the Firewall Zone is disabled, you should be aware of the certain implications.

Here's what may be affected on your WordPress sites:

• Certain JetPack plugin functionality will be impacted.
• The mobile Android/IOS apps will be broken with your site since they run over the XML-RPC system.
• Any other system or plugin that uses your site’s XML-RPC system to communicate and operate your site.

For more information about the XML-RPC system, read the blog article here.