This step recognizes that the software that realizes a given service must be selected or custom built.

这个步骤指出实现给定服务的软件必须被选择或者自定义构建。

youdao

If the company's software engineers think they can tinker up something to make themselves more productive-for example, a custom-built project tracking system-merrill doesn't stand in their way.

如果公司的软件程序员认为他们可以通过修补或开发一些东西来另他们自己更加高效的话，(例如，自制一个项目跟踪软件)，Merrill不会试图阻止他们。

youdao

This loophole let them start it up with some custom-built software rather than its onboard Android operating system.

BBC: Frozen Android phones give up data secrets

The data from this indoor GPS system is sent to computers where custom-built software sends commands to the quadrocopters via wifi.

CNN: Flying robots learn mind-boggling tricks