Microsoft terminology goes something like this:
Production Use = you can deploy your customers using these licenses, as long as they remain under your ownership. E.g. a web hosting company would require production-use licenses of MSSQL, Server 2008 etc. Because it's not "them" using it, it's "their" customers. However the same web hosting company would be allowed to host their own website using a server that is setup with "internal use" licenses.
Internal Use = you can use the products yourself and inside your company, as much as you like. But you cannot run a production environment on them. If you're deploying the licenses with the intention that somebody outside the company will be using them - this is not allowed.
Evaluation Use = limited time only to test the products. Once finished you're meant to either discontinue use or upgrade to either an internal or production grade license.
Production Use = you can deploy your customers using these licenses, as long as they remain under your ownership. E.g. a web hosting company would require production-use licenses of MSSQL, Server 2008 etc. Because it's not "them" using it, it's "their" customers. However the same web hosting company would be allowed to host their own website using a server that is setup with "internal use" licenses.
Internal Use = you can use the products yourself and inside your company, as much as you like. But you cannot run a production environment on them. If you're deploying the licenses with the intention that somebody outside the company will be using them - this is not allowed.
Evaluation Use = limited time only to test the products. Once finished you're meant to either discontinue use or upgrade to either an internal or production grade license.