It is a platform that allows customers to build, brand and launch their own app store platform, which is easily submitted by developers, discovered by users, and managed by owner. Platform represents full CRM system that allows setup sites. From app onboarding to payments, every function of the app store is powered by API, keeping it flexible to meet current and future needs. Challenges: - support multi-tenancy for authentication - proxy requests from client to API, and inject authentication in it - allow customers to customize templates of market sites by simple settings Technologies and Tools: Java 11, Typescript, Redis, MongoDB, Webflux, Spring Boot, Spring Security, Reactor, Docker, O​Auth2, JWT,​ AWS, Angular, Bootstrap, HTML, CSS