ARLINGTON, Va.--(BUSINESS WIRE)--Stacklet, developer of the cloud governance platform based on Cloud Custodian, today announced it has closed $18 million in Series A funding. The investment was led by Addition with participation from Foundation Capital and new individual investor Liam Randall. The funds are earmarked for continuing the support and growth of the Cloud Custodian community, advancing the Stacklet platform, and hiring in engineering, marketing, sales and customer success. Stacklet.