Aria Systems, a Philadelphia company that offers billing services for the gaming industry, said it has raised $4 million from from venture capital firm Hummer Winblad Venture Partners.
Aria handles things like registration, provisioning, metering, billing, invoicing, and ongoing customer management.

Hummer Winblad managing director Mark Gorenberg will join Aria’s Board of Directors. Aria is Hummer Winblad’s fourteenth  “software as a service” investment.

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