Types are the broadest definition of your contacts, each contact or company having a single Type that defines them as they flow through the processes in your CRM system. Typically this will look something like "Unqualified Lead" as they come in from a trade show or conference, progressing to a "Qualified Lead" state and then either "Lost Lead" or "Prospect". As the relationship with that company continues, hopefully they continue to a stage of "Customer". They might even continue through that stage to a Type of "Former Customer".
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