Modernize SharePoint Classic Before Legacy Dependencies Disrupt Workflows
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Inventory classic pages, alerts, scripts, add-ins and ACS dependencies, then modernize or retire them based on business criticality.
TL;DR
SharePoint classic dependencies such as alerts, Script Editor web parts, provider-hosted add-ins, ACS authentication and legacy workflows can break business processes when Microsoft retires them. Create a dependency inventory, prioritize critical processes, retire unnecessary sites, modernize simple pages, rebuild complex solutions and use governed notification patterns such as Power Automate.
Original by Josiah Opiyo, on Microsoft 365 and Power Platform Community Blog. Read the original
This is our own summary, not a republication or full translation.
Governance takeaway
- Admins/CoE: Inventory classic pages, templates, alerts, scripts, add-ins, ACS dependencies and legacy workflows, then prioritize them by business criticality rather than site count.
- Security/Compliance: Use modernization to reset information architecture, lifecycle management, audit readiness and access models, because legacy components can create governance gaps and audit headaches.
- Leadership/Business: Include HR, finance, operations, platform owners and process experts in decisions, because hidden dependencies can cause missing notifications, failed automation and disrupted business workflows.
Frequently asked questions
What is the most valuable first step before retiring SharePoint Classic?
A focused dependency inventory, which the author calls the single most valuable step.
Which hidden SharePoint Classic dependencies does the article warn about?
Script Editor web parts added eight years ago, integrations built on ACS authentication that nobody has touched since the migration, and alerts that departments rely on because that is how they have always done it.
How should teams replace SharePoint alerts that are being retired?
Start from the business workflow instead of converting technically. Clarify which events need a notification, who has to receive it and what the escalation path is.