// the 8 signs
None of these are subtle.
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01
New features take disproportionately long
Small changes require touching many interconnected systems, and estimates seem absurdly high for the scope. It's an architecture problem, not a team-performance one - and it gets worse, not better, without intervention.
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02
You can't hire for it
Built on technology newer engineers don't know and increasingly don't want to learn. When the one or two people who hold the architecture in their heads leave, you find out how serious the risk really was.
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03
Knowledge lives in people, not documentation
"Ask Marcus how that part works" is a warning sign. Critical knowledge living in individual contributors rather than code or docs is a fragility that's easy to overlook - until it breaks.
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04
You can't integrate it with modern systems
Brittle integrations that break when either side changes, manual data exports, and data silos are symptoms of a system past its integration window - you're building expensive bridges or making decisions the system allows, not the ones the business needs.
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05
Compliance and security are getting harder
End-of-life software stops getting security patches; GDPR, SOC 2, and HIPAA need increasingly creative workarounds; auditors ask harder questions. At some point it's a liability, not an inconvenience.
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06
Maintenance costs exceed replacement
Add up engineering time, the drag on new-feature delivery, manual workarounds, and opportunity cost. When that number approaches what a replacement would cost to build and run, you've hit an inflection point.
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07
Your business has outgrown the design
A system built for 50 employees may be wrong for 500; one built for a single product line may not support five. When "the system can't support that" becomes a strategic constraint, you've outgrown the design.
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08
Downtime is becoming normal
Rising unplanned downtime, or maintenance windows that are longer and more frequent, means the system is running at the edge of its reliability envelope - and damaging your credibility every time.
Three or more sound familiar? It's time for the conversation ↓