Answer:
acCustomer management can be a Business process where it will follow the following cycle
calling the customer, handling the customer, nurturing the lead, follow up, negotiation with the customer, customer engagement, closing the deal, payments, handling the account and managing the account for future.
Business Process management is some thing where you execute, automate and manage your business processes for better communication and quick response.
where as Customer management is also meant for better communication to the client.
CRM is skewed towards the external customers
BPM is skewed towards the Internal customers