# 3. BaaS (Blockchain as a Service)

- [3.1 “Core Technology”](/blockchain-as-a-service/3.-baas-blockchain-as-a-service/3.1-core-technology.md)
- [3.2 The Benefit of OSP using  API of BaaSid](/blockchain-as-a-service/3.-baas-blockchain-as-a-service/3.2-the-benefit-of-osp-using-api-of-baasid.md)