This document discusses designing vibrant learning ecosystems. It defines a learning ecosystem as a network of relationships among learning agents, learners, resources and assets in a specific context. Vibrant ecosystems are learner-centered, equitable, modular and interoperable, and resilient. Ecosystems involve three structural roles: concentration provides core services at scale, fragmentation provides customized services, and catalyzation bridges gaps and forges shared goals. The document explores needs in disrupted suburbs and provides an example story and structural roles to address those needs. It outlines an activity to prototype learning ecosystems to meet needs of specific geographies and learners.