The Public Health Agency has never had to undertake operations of this nature, including at the border, as the pandemic required that response. I can't say exactly how long it would take, but there is very detailed and sequential governance around the development of IT projects. It would normally take years potentially to implement longer-term projects. In this case, they were undertaken on an emergency basis, but there still should have been documentation around that.
The reason it went forward so quickly was that some of those processes were relaxed given the emergency nature of the deliverables.