The intent of Graffiti is for OpenStack users to be able to declare the capabilities they require at a higher, more portable level than they do today. Graffiti helps guide or automate the selection of lower level cloud resources that match the desired capabilities.
Many OpenStack services are great at providing somewhere to use metadata in terms of key-value pairs. However, collaborating on metadata is largely a disconnected and difficult process. This often involves searching outdated wikis and opening the source code. It becomes more difficult as a cloud's scale grows.
At its most basic concept Graffiti is a metadata collaboration tool.
Initial use case
We are starting small with the idea that we can demonstrate how we can make even "simple" tasks like launching a VM became even simpler for non-technical users.