Sollo Digital (also known through its flagship product Sollo Card) is a Brazilian business intelligence and digital business card company headquartered in Blumenau, Santa Catarina, with an additional office location in Calgary, Canada, reflecting international expansion ambitions. The company's core mission is captured in its tagline "your last business card" — positioning its NFC-enabled smart cards as a permanent replacement for traditional paper business cards.

The core product, Sollo Card, is a PVC card similar in look and durability to a credit card, built to withstand drops, water, and dust. It works by simply tapping the card against an NFC-enabled smartphone to instantly share contact information; for phones without NFC support, a printed QR code on the card provides the same functionality. A distinctive feature is the card's multilingual capability — automatically updating its data labels for international business travelers connecting with contacts who speak different languages, making it practical for global networking.

Sollo frames its value proposition around three main benefits: building more meaningful, lasting relationships (since paper cards are often lost or forgotten, while digital contact info stays on a client's phone), never missing an opportunity thanks to the card's physical durability, and delivering real cost savings, since cards are reusable — when an employee leaves a company, their Sollo Card can simply be reassigned to a new team member. The company also emphasizes sustainability, noting that its recyclable cards align with ESG (Environmental, Social, and Governance) principles, unlike recurring paper card costs that harm the environment.

Beyond individual cards, the company offers Sollo Business, described as an intelligence platform for companies, extending the product from a simple networking tool into a broader business insights offering for corporate and enterprise clients.