citybiz+ Exor, Geek Ventures Join $3 Million Round for Go-To-Market Platform Scalestack

Scalestack, which runs a go-to-market (GTM) platform to empower sales teams, has raised $3 million from New York’s Exor Ventures and Geek Ventures, Spain’s Criteria Venture Tech, Dallas, Texas-based Sentiero VC and several others.

West Coast firms FN Fund, Red Bridge, Launch Factory, BackfutureVC and Team Ignite, and prior investors Canada’s Ripple Ventures, London-based FlyerOne Ventures and New York’s Forum Ventures also participated.

‘Clay for the Enterprise’

The New York-based startup runs a so-called orchestration and agentic platform that helps enterprise marketing teams scale faster. Co-founders Elio Narciso and Alessandro Prioni dub Scalestack as “clay for the enterprise.”

“Our platform isn’t about handling a few thousand leads or accounts,” said Narciso, an Italian-born who heads the company as CEO. “We’re talking about enriching 450,000 accounts in hours across dozens of data sources, or de-anonymizing 200,000 signups with unmatched precision, and delivering actionable insights at scale — all while enabling seamless integration with enterprise systems.”

Narciso earned an MBA degree from MIT’s Sloan School of Management and worked at AWS, where he ran its global startup program, before starting Scalestack. Prioni has founded The Design Project, which operated in Buenos Aires and Spain, and worked in the United Kingdom and Tel Aviv.

Inefficiencies in Sales Reps

In an interview, Narciso said he started Scalestack to address obvious inefficiencies in sales representatives. Citing Salesforce, he revealed an interesting stat — sales reps spend 72% of their time not on selling but in processing data.

Sales reps “had like, you know, huge pockets of unproductive work, which related to making sense of data about like target, you know, in the form of like target accounts or leads, and that’s like very inefficient,” Narciso said. This is the inefficiency Scalestack targets. In building Scalestack, Narciso said he benefited significantly from his experience of nurturing startups at AWS.

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Scalestack claims a dual-layered approach. First, its enterprise-grade data orchestration and enrichment hub connects customer data sources before “cleaning” and categorizing them into actionable data points. It then uses agentic infrastructure, with “swarms of AI agents,” to tap data sources across the public web to deliver customizable, multimodal data points.

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Scalestack’s customers include Harness, Redis and MongoDB.

“Our partnership with Scalestack exemplifies what they can do for modern GTM Ops teams,” said Meghan Gill, senior vice president of SalesOps at MongoDB. “From dynamically calculating TAMM [total addressable market] per account, to detecting smoke signals in a territory, to providing enriched data on the developer community, their AI-powered workflows make the impossible possible at scale.”