Rethink External Sharing: From Guest Chaos to Trusted Collaboration

The Rise of Guest Accounts in the M365 Era

As digital collaboration becomes central to business operations, organizations increasingly rely on external sharing to stay connected with partners, clients, and vendors. Microsoft has made this easier by enabling guest access across SharePoint, Teams, and OneDrive — but guest accounts, originally designed for lightweight access, have become the default method for external collaboration. Many enterprises now manage thousands, or tens of thousands, of guest identities with little visibility into who has access to what. It's a model that's become too open, too complex, and too costly.

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The Hidden Costs of Guest Access

Business costs mount as IT teams spend valuable time managing, supporting, and governing every guest identity, while security costs compound as stale access, orphaned identities, and over-permissioned users expand the attack surface. Every guest account is a potential entry point; without clear ownership and lifecycle management, these accounts often remain active far longer than needed.

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Why Open Sharing Fails

Guest-account-based sharing is slow and inefficient — invites, acceptances, and login issues introduce friction that leads to shadow sharing under deadline pressure. It creates governance blind spots, since external identities are often created ad hoc with no built-in lifecycle or deprovisioning process. And it's insecure by design: when anyone can be invited into a tenant, temporary collaboration becomes permanent exposure, working against the principle of least privilege.

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The eSHARE Alternative: Trusted Collaboration

eSHARE offers a smarter approach that doesn't rely on guest accounts at all. It's integrated with Microsoft 365, so content stays in SharePoint and OneDrive while external users engage through eSHARE's Trusted Collaboration fabric — no retraining or system overhaul required. Governance is built in: every interaction is time-bound, role-specific, and fully auditable. And because eSHARE provisions secure, controlled access to specific content rather than provisioning identities, it's built to scale from a handful of vendors to thousands of partners with no custom processes or one-off exceptions.