But a number of acquirers, and not only Salesforce.com, could be interested in the company, Wang added.
Others include SAP, Adobe, SAS Institute and Infor, he said. The latter company already has marketing automation software through its purchase of Epiphany, but buying Marketo, which has 2,000 customers, would expand that base, Wang noted. Marketo CEO Phil Fernandez was previously president of Epiphany.
Marketo's move comes during a hot period for enterprise software IPOs. Also Tuesday, analytics vendor Tableau revealed it intends to seek $150 million in its own IPO, while cloud-based financial and human-resources software vendor Workday filed a highly successful IPO in October.
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