Lengdon vs Datasite
NOT DILIGENCE.CLOSING.
Datasite is built for the diligence phase — sharing documents with potential buyers. Lengdon begins where Datasite ends: when both parties have agreed and need to close.
Datasite
Document access control for M&A diligence
Datasite manages who can view which documents during the exploration and diligence phases. It's a repository with permissions. It doesn't know what phase of a deal you're in, doesn't enforce sequence, and doesn't produce a closing record.
Lengdon
Sequenced closing infrastructure for private capital
Lengdon begins after diligence is complete and terms are agreed. It enforces the six-gate sequence that takes two parties from agreement to close — producing an append-only record that both parties own permanently.
Capability
Lengdon
Datasite
Enforced six-gate closing sequence
Datasite is a document repository with no enforced transaction sequence.
Per-person NDA — individual, not company-level
Datasite access is typically granted at group/company level. Lengdon binds access to the individual.
Dual-party confirmation at every gate
Datasite is built around single-party document upload, not dual confirmation. Lengdon requires both parties to confirm at each gate.
Append-only audit log
Datasite logs, like most data room logs, are admin-editable. Lengdon's log is append-only.
Payment confirmation gate
No data room product includes a payment confirmation gate.
Document storage and sharing
Q&A and redline workflow
Lengdon is closing infrastructure, not a diligence platform. It begins after terms are agreed.
Enterprise AI and search
Activity analytics
Datasite's analytics serve the seller. Lengdon's record serves both parties equally.
Use both. Sequence matters.
Datasite for diligence. Lengdon for close. They serve different phases.