Plain-English meaning
Dependence that makes changing providers costly, slow, risky, or operationally disruptive.
Why it matters in a software decision
The cheapest launch option can become expensive when data, integrations, skills, contract terms, or workflows are hard to move.
Where you may see it
Architecture reviews, contract negotiations, migration plans, renewal decisions, and business continuity assessments.
What to verify
- Data and configuration export
- Integration and identity dependencies
- Termination assistance and timing
- Replacement skills, testing, and parallel-run needs
Do not confuse it with
Switching cost exists in most systems; lock-in becomes a concern when dependency is disproportionate, hidden, or not governed.
Procurement example
Run a small export and restoration test before signature, then keep an exit owner and evidence with the contract record.
This glossary explains procurement usage in plain English. Contract, privacy, security, accounting, and regulatory conclusions require context-specific review.