E-commerce infrastructure startup Pietra has successfully raised $16 million in a new funding round led by M13. This new capital will be used to grow Pietra's platform and expand its membership plan for e-commerce businesses.

This funding adds to a $5M Seed round led by A16Z and a $15M Series A round led by Founders Fund. Familiar investors who also used this opportunity to invest alongside M13 were Founders Fund, TQ Ventures, and Abstract Ventures- all doubling down on the company.