Updated April 7, 2026

Originally published March 15, 2024

What is file sharing?

File or document sharing is the practice of distributing digital files—documents, images, presentations, or data—across devices, networks, or locations so that multiple people can access, review, or collaborate on them.

Think of it as giving your files and folders an online passport. Whether you're sharing a pitch deck with a potential investor, distributing a confidential information memorandum (CIM) to prospective buyers, or collaborating on a term sheet across time zones, file sharing is the mechanism that makes it all possible.

For M&A professionals and founders alike, how you share files and folders matters as much as what you share. The right approach keeps sensitive data protected, maintains a clear audit trail, and gives you visibility into how recipients engage with your documents.

What are the main types of file sharing?

There are four primary types of file sharing, each with distinct strengths and trade-offs depending on your use case.

1. Peer-to-peer (P2P) sharing

P2P file sharing allows two or more users to exchange files directly between their devices, without relying on a central server.

How it works: Files travel directly from one device to another over a shared network.

Best for: Small teams with simple, low-risk sharing needs.

Limitations: Difficult to scale, no centralized access controls, and higher security risk when sharing with unknown parties. Not recommended for confidential financial or legal documents.

2. Cloud-based file sharing

Cloud-based sharing stores files on remote servers accessible via the internet, allowing any authorized user to retrieve them from any device.

How it works: Files are uploaded to a cloud platform and accessed via a shared link or login.

Best for: Distributed teams, remote collaboration, and everyday document management.

Limitations: Free storage tiers fill up quickly, and basic cloud tools lack the granular permissions and document tracking that high-stakes deals require.

3. Email attachments

Email attachments are files sent directly within an email message from one recipient to another.

How it works: Files are encoded and transmitted alongside the email body.

Best for: Quick, one-off sharing of small, low-sensitivity files.

Limitations: File size caps, no visibility into whether recipients opened or read the attachment, no version control, and no way to revoke access once sent. Sending a pitch deck or deal document this way means it goes into a black hole with no engagement data.

4. File transfer protocol (FTP)

FTP is a network protocol that transfers files between a client and a server over the internet.

How it works: Users connect to an FTP server using dedicated software and upload or download files directly.

Best for: Technical teams managing large-scale or automated file transfers.

Limitations: Not user-friendly for non-technical users and lacks the modern collaboration features, document tracking, and access controls that financial services teams expect.

5. Virtual data rooms (VDRs)

A virtual data room (VDR) is a highly secure online repository designed specifically for secure file sharing during M&A transactions, due diligence, fundraising, and other high-stakes processes.

How it works: Documents are hosted in an encrypted, permission-controlled environment. Virtual data room administrators grant granular access to specific users or groups, and every interaction is logged.

Best for: M&A due diligence, capital raises, board communications, and any workflow requiring enterprise-grade security and document intelligence.

Why it matters: Unlike basic file sharing tools, a virtual data room gives you real-time insight into how buyers, investors, or counterparties engage with your documents—so you always know which sections of your CIM capture the most attention and when to follow up.

How does file sharing work?

Modern file sharing platforms rely on several core mechanisms to keep your data safe and your workflows running smoothly.

File encryption

File encryption converts your document into an unreadable format that can only be accessed with the correct key or password.

Encryption is essential when you need to send files securely, especially when sharing confidential financial documents across networks. If you've ever wondered how to password protect PDF documents or how to secure a PDF with a password, encryption is the underlying technology at work. Enterprise-grade platforms handle this automatically, so you don't have to do it manually for every file.

Authentication

Authentication verifies the identity of anyone attempting to access a shared file.

This typically involves a username and password, and may include multi-factor authentication (MFA) for higher-security environments. For M&A professionals managing sensitive deal data, robust authentication ensures only verified parties can access your documents—maintaining the confidentiality and compliance your CFO demands.

Access controls

Access controls define exactly what each user can do with a shared file—view only, download, edit, or print.

Granular permissions are a cornerstone of effective document management. With a secure portal for clients and investors, administrators can restrict access by user, group, or document type. This is particularly critical during business due diligence, where different parties need access to different document sets, and any unauthorized disclosure could jeopardize the deal.

Document tracking and audit logs

Document tracking records every interaction with a shared file—who opened it, which pages they viewed, how long they spent on each section, and when they accessed it.

This is where modern file sharing tools go far beyond legacy virtual data rooms (VDRs) and basic cloud storage. Real-time, page-level intelligence lets you know exactly which buyers are serious and what matters most to them. For founders sharing pitch decks, it means you stop sending documents into the dark and start following up with precision. For M&A advisors, it means closing deals with confidence—backed by data.

User tracking and expiring links

Expiring links add a time-based layer of control, automatically revoking document access after a set date or number of views.

This is especially useful during sensitive negotiations, where you want to share information with a prospective buyer without granting permanent access to your deal room.

Tips for more effective file sharing

Whether you're sharing a term sheet, a board update, or a pitch deck, these best practices help you protect your data and work more efficiently.

• Choose the right tool for the sensitivity of the content.

  A basic cloud link is fine for a marketing one-pager. A confidential information memorandum belongs in a virtual data room with full access controls and audit logging.

• Set permissions deliberately.

  Before you share, ask yourself who actually needs download access—and who should be view-only. Granular permissions prevent accidental data leaks.

• Use document tracking to guide follow-up.

  Don't guess whether your investor read the financials. Let engagement data tell you when to reach out.

• Protect PDFs with passwords when sending outside a secure platform.

  If you need to know how to password protect a PDF document outside of a dedicated platform, most PDF readers and the DocSend platform handle this natively.

• Audit your access list regularly.

  During a long deal process, parties drop out. Make sure your document access reflects your current deal team—not your original one.

Benefits of file sharing software

The right file sharing platform delivers benefits that go well beyond simply moving files from one place to another.

Speed and reliability

Modern file sharing tools are faster and more reliable than email attachments, especially for large files. No more bounced emails or zip file nightmares—files are accessible instantly via a secure link.

Collaboration across borders

Cloud-based and virtual data room platforms transcend geography, enabling global deal teams to access the same documents simultaneously, in real time, from any device.

Security and compliance

Enterprise-grade file sharing and virtual data rooms (VDRs) ensure your documents are not just shared—they're securely tethered with encryption, access controls, and audit logs that satisfy the compliance requirements of financial services teams.

Document intelligence

The most powerful file sharing platforms go beyond storage. They tell you how recipients engage with your content, giving you the insight to move deals forward with confidence. Know which buyers are serious. Know what matters most to them. Close faster.

Cost efficiency

Deploying a modern VDR takes minutes, not months—and costs a fraction of legacy systems. Whether you're a Series B founder running your first deal process or an M&A advisor managing multiple transactions, you get enterprise-grade capability without enterprise-grade complexity.

How to choose the right file sharing software

The right file sharing software depends on your use case, the sensitivity of your documents, and the level of control and visibility you need.

Ask yourself these questions before choosing a platform:

• What types of files are you sharing? Large financial models and legal agreements need more security than a marketing brief.

• Who are your recipients? Internal teams, external advisors, and prospective buyers all have different access needs.

• Do you need document tracking? If knowing whether your investor read your deck matters to your process, basic cloud storage won't cut it.

• What are your compliance requirements? M&A and PE professionals often require SOC 2-compliant platforms with full audit logs and granular permissions. Virtual data rooms (VDRs) are often necessary for this level of permissions.

• How quickly do you need to get started? Legacy VDRs can take days to configure. Modern platforms like DocSend let you deploy in minutes.

DocSend delivers enterprise-grade virtual data room (VDR) capabilities your CFO demands, with the modern experience and insights your team actually wants to use. Backed by Dropbox's security and trusted by companies closing billions in deals, it is purpose-built for the way financial services professionals and founders work today—bringing speed, simplicity, and document intelligence together in one secure platform.

Try our virtual data rooms for free for 2 weeks.