Sample content. This article demonstrates the reading layout and is not published opinion.
Systems rarely fail because the first version was too simple. They fail because nobody could tell where one responsibility ended and the next began.
Boundaries before services
A well-structured monolith with clear modules is easier to scale than a set of services with tangled data. Draw the boundaries first. Splitting them into deployable units can come later, if it is ever needed.
One owner for every piece of data
When two parts of a system can both write the same record, every future change becomes a negotiation. Give each piece of data a single owner and make everyone else ask.
None of this is glamorous. It is the difference between a platform that absorbs new requirements and one that resists them.