In business technology or BT, "two become one" is about software and business process "merging" to produce defined business outcomes. It is a lesson learned from The Law of Technology Injection.
The business world has been complaining about IT. Much of the complaint is a result of the software road and the process road not coming together for a common cause. Specific complaints by CXOs have been 1. Return Vs Spend disconnect 2. Poor or no alignment with business.
I have seen these business issues in dozens of software initiatives. Software teams are busy getting the software to work and they work harder still to meet the deadline. Besides an ever-shortening project time-frame, another reason given for lack of business orientation is ... Where is the method to make software development business-centric?
BT practice is a set of vital business-centric steps that when "added" to an existing software methodology can enable the "merging" of software and business process. This "merging" is required to make the ongoing IT-to-BT move a reality.