Doesn't Cloud Computing have the same content (professionals using AWS) as this proposal?
To directly answer the question: the AWS proposal excludes other platforms and questions covered by the proposed Cloud Computing site.
The proposed AWS site could be considered a sub-community of the proposed Cloud Computing site. In my opinion, the two proposals should be merged.
According to Robert Cartaino, the Director of Community Development for Stack Exchange, there is a merge process for site proposals that involves a discussion tagged as a
The AWS proposal is for an AWS-specific site.
This Practical Cloud Computing proposal is for a multi-technology Cloud Computing proposal.
Both proposals seem to have the same top-level questions listed, possibly due to a magical way that Area 51 links information. However, the proposals have different definitions and "sample questions".