Requirements and architecture design for cloud PaaS orchestrator

Cloud technologies provide abilities for simple and reliable scaling of resources, due to which they have become widespread. The task of managing distributed services in a cloud environment is especially relevant today. Special programs are used for that purpose named “orchestrators” which implement the functions of lifecycle management for applications. However, the existing solutions have many limitations and are not applicable in the general case. Also there is no single standard or protocol for interaction with such tools which requires adaptation of programs for each particular case. The main objectives of this paper are to identify the requirements for a platform-level cloud computing (PaaS) orchestrator, as well as to propose flexible architecture patterns for such tools.