I think I know the answer, but wanted to put it out to the community... does SugarCRM have a module to support a web commerce portal to support B2B sales?

Sugar has the Web-To-Lead functionality: http://support.sugarcrm.com/Documentation/Sugar_Versions/7.9/Ent/Application_Guide/Web_To_Lead_Forms/ 

Also, you could use an existing eCommerce platform (eg: Wordpress and WooCommerce) and have it communicate with Sugar over Webhooks: Using Webhooks - WooCommerce Docs

Sugar has the Web-To-Lead functionality: http://support.sugarcrm.com/Documentation/Sugar_Versions/7.9/Ent/Application_Guide/Web_To_Lead_Forms/ 

Also, you could use an existing eCommerce platform (eg: Wordpress and WooCommerce) and have it communicate with Sugar over Webhooks: Using Webhooks - WooCommerce Docs