Server app : high level design - components diagram, sequesnce diagram API design Server app : Main API functions implementation with test coverage(without persistence) Implementing scripts for EPAM cloud deployment Server app : DB - entities scheme Server app : DB - perisitence layer implementation Client app(web) : HTML, css - main window (see list of messages, send message) Client app(web) :Main window - JS (async calls to server in background) App v.2 - add features to see list of users and filter messages from selected users + ***Security