Various embodiments implement a multiplatform system architected to provide secure messaging between a plurality of disparate systems (e.g., mobile devices, secure cloud systems, remote locations, health monitoring devices, fitness centers, etc.), co-ordinate resources associated with each of the disparate systems, manage communication between proprietary applications via customized application programming interfaces (APIs) and manage reservation of resources of the disparate systems via the APIs. Further embodiments enable an extensible system architecture to incorporate additional systems. In some embodiments, the system includes a multi-layered database architecture to mediate information and access control (e.g., based on inheritable privileges, specific user classes are allowed or denied access to data in the database). In further embodiments, the data architecture is architected with access layers that ensure compliance with regulatory systems governing health data.