Salsa, which provides APIs and UI components that let vertical SaaS platforms offer payroll as a feature to their customers, raised a $20M Series A led by Altos (Ryan Lawler/Axios)

Ryan Lawler / Axios:
Salsa, which provides APIs and UI components that let vertical SaaS platforms offer payroll as a feature to their customers, raised a $20M Series A led by Altos  —  Salsa, a startup providing embedded payroll infrastructure to vertical SaaS platforms, raised $20 million in Series A funding, CEO John Kramer tells Axios exclusively.