The X2Y shorthand is one of the most established patterns in business naming. B2B, D2C, P2P. Everyone reads it automatically, which means a domain in that shape arrives with a structure already built in.
D2E works as direct-to-enterprise, the model of selling straight into large organisations without a channel. It also reads as design-to-execution, data-to-everywhere, or developer-to-enterprise, each of which describes a real category of software. For a company positioning itself on that kind of direct pipeline, the name states the model in three characters.
The .net is the right extension for the technical and infrastructure side of that world, and it keeps a three-character name reachable when the equivalent on .com would not be.
Three characters, a recognised naming convention, and a meaning a buyer can define precisely to fit their business.
The name is listed. Enquiries welcome.