Yes — included on the managed plans, not billed as a separate line, and never converted
into one later. Hosting, backups and disaster recovery come with the runtime. Half the
license and zero hosting is the offer.
It stays free because it is cheap for us to provide, not because we are absorbing a loss
to win your logo. The engine is 3.4 MB, it carries five third-party
dependencies in total, there is no virtual machine underneath it, and on the same workload
at default configuration it uses 14–21x less memory than the Java-based
engine we ran before it.
The honest small print: it is included within a fair-use envelope on cores and named
users, and that envelope is written into your order and sized from your assessment. It is a
number you agree to up front, not a paragraph we point at afterwards.