SQL Math Deployment Version
SQL Math is a new and growing library of constants, functions, procedures and types designed to extend SQL Server's limited built in mathematics offerings. The Deployment license is designed for appliecation developers and development companies seeeking to use SQL Server Math functions for applications that are then sold/deployed to other users.
More details can be seen here.
Please see here for the non-distributable version of SQL Math.
All sales have Lifetime License, so all future versions are available at no extra expense.
One developer license is required per organisation, and permits unlimited developers working for organisation to access SQL Math. It also permits the organisation to distribute SQL Math as part of a software package.