This is a planning framework, not a client case study, a quote or evidence of delivered results. The scenarios describe decisions to validate with the business.
A spreadsheet may still be the right tool for analysis while becoming difficult to use as a shared operational record. Identify the specific process that needs controlled states, permissions or hand-offs.
Replacing a spreadsheet: move one defined workflow
Workflow boundary
Name the starting event, responsible roles, required inputs and completion evidence. Separate this workflow from unrelated sheets and reports.
Data and permissions
Define records and relationships before reproducing every column. Decide which roles can create, review and correct the data.
Transition
Reconcile a sample migration and preserve an export path. Agree how work continues if the new workflow is unavailable.
Which spreadsheet behaviour needs stronger control?
Inspect an overwritten approval, a formula changed without review or a row that nobody owns. Does the problem require record permissions and state transitions, or would clearer sheet ownership suffice? Identify formulas and exports people still need before designing the replacement.
What should move out of the sheet first?
Choose one record lifecycle and define its import, approval and export boundaries. Keep analytical sheets that remain useful outside that scope. Agree how old rows are reconciled, who can correct migrated records and how staff continue work during the transition.
The next step
Custom business software describes controlled operational records. Discuss the spreadsheet workflow with redacted columns, formulas and approval rules, so the proposed application solves the coordination problem rather than copying every tab.