Practice
Replacing software you have outgrown
Migrations off systems that cannot go offline, cannot be rewritten at once, and cannot stay as they are.
The systems most worth replacing are the ones it is most dangerous to replace. They hold years of data, nobody remaining wrote them, and the business does not stop while the work happens.
So it is done in pieces, with the old system and the new one running alongside each other until the new one has earned the traffic. The first deliverable is usually not code — it is an honest map of what depends on what, because that is what determines the order everything else has to happen in.
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Tell us what you need built.
We take on a few projects at a time. If it is not a fit, we will say so quickly.