# Overview

### Tech Prerequisites

* [Docker Swarm](https://docs.docker.com/engine/swarm/)
* [Terraform](https://www.terraform.io/) (for remote deployments to AWS only)
* [Ansible](https://www.ansible.com/) (for remote deployments only)
* [Platform Cli](https://app.gitbook.com/o/lTiMw1wKTVQEjepxV4ou/s/TwrbQZir3ZdvejunAFia/)
* [WSL2](https://learn.microsoft.com/en-us/windows/wsl/install) (for windows users)

### Components

This CDR consists of the following services:

* Fhir Datastore - Hapi FHIR
* Interoperability Layer - OpenHIM
* ​Analytics Datastore - Elasticsearch
* Dashboard Visualiser - Logstash
* ​Dashboard Visualiser - Jsreport
* ​Client Registry - Sante MPI​
* Message Bus - Kafka
* ​NGINX (reverse proxy)
* OpenHIM mediators - MPI-checker​ 
* OpenHIM mediators - MPI-updater
* OpenHIM mediator - Reprocessing