Initial content for Overview and What is NMaaS pages

docs/about.md

-**NMaaS** is a **[GÉANT](https://www.geant.org)** project from the **[GÉANT fourth programme](https://www.geant.org/Projects/GEANT_Project_GN4-3)** (GN4-3)
+**NMaaS** is a **[GÉANT](https://www.geant.org)** project from the 
+**[GÉANT fourth programme](https://www.geant.org/Projects/GEANT_Project_GN4-3)** (GN4-3)
 
 ## Useful links
 
-- [An example link](https://beta.docs.nmaas.eu)
+- [GitHub](https://github.com/nmaas-platform)
+- [GÉANT project](https://geant.org/)
 
 ## Project members
 

docs/index.md

 # **NMaaS** home
 
 ## **Overview**
+
+The cost and complexity of developing and integrating in-house network management may be too high for many NRENs,  
+Institutions, projects or teams. Off-the-shelf solutions might not be suitable and might be costly. 
+
+Network Management as a Service (NMaaS) aims to support these users in providing an effective, efficient network 
+and service management platform. NMaaS enables management and monitoring of user networks through on-demand deployment 
+of network management tools in a Kubernetes-based cloud infrastructure. Using a multi-tenant approach and software based
+VPNs, each NREN or Institution has private access to their network management systems and services from a highly 
+available cloud based platform.
+
+NMaaS is meant for smaller and emerging NRENs, campuses, small organisations or distributed research projects that may 
+have limited resources to develop and/or maintain their own NMS infrastructure or planned to outsource these activities.
+By using a shared and supported platform, Institutions can focus solely on the monitoring and management of their 
+service components. It is also suitable for use in those NRENs which provide campus network management service (CNaaS)
+to their institutions. Using NMaaS, NRENs can easily provide per-campus network management software instances.
+
+NMaaS (https://nmaas.eu) is offered within the GÉANT project as a production service since December 2018. Currently, 
+the portfolio of tools offered by NMaaS consists of 28 applications including Oxidized, LibreNMS, Prometheus, Grafana, 
+Zabbix, NetBox and others.
+
+## **Reference documentation**
+
+This page is still being populated with up to date NMaaS news and documentation. For additional information visit our
+GÉANT project [website](https://wiki.geant.org/display/NMAAS).
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docs/what-is-nmaas.md

+# What is **NMaaS**?
+
+NMaaS is an [open source](https://github.com/nmaas-platform) framework originally developed within the
+[GÉANT](https://geant.org/projects/) project for orchestration of on-demand deployment of applications in a
+Kubernetes-based cloud environment.
+
+With a simple self-service web interface, NMaaS applications are easily deployed within an isolated tenant environment
+assigned to a given institution or team. An application’s lifecycle (configuration updates and re-deployments) is fully
+managed following a GitOps approach: a specific Git repository is tightly associated with every deployed application 
+and a set of CI/CD pipelines ensure proper re-deployments of the applications following every update on the Git master
+branch.
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