Best Cloud Storage Services for Microsoft 365

6,000+ companies trust Files.com to automate and secure business critical transfers. We obsess about security, compliance, reliability, and performance so your critical business processes just work every time. Easily manage any transfer flow without writing scripts or code, and onboard workloads and partners effortlessly. We support standard file transfer protocols (FTP, SFTP, AS2) for working with external partners and also provide native apps for high performance internal transfers. As a fully Cloud-Native SaaS, there are no servers for you to buy or maintain, there is no installation required, and high availability and redundancy are built in and free. Our InfoSec Program is audited annually by Kirkpatrick Price, a leading information security CPA firm. Our audit covers the scope of the entire Files.com business (not just datacenter operations) and names Files.com specifically. Beware of smaller competitors who try to pass off someone else’s audit as their own. Technical capabilities include encryption at-rest and in-transit, four types of two-factor authentication, nine enterprise identity (SSO) integrations, configurable password and session policies, and a perfect “A+” score from Qualys SSL Labs.

Dropbox Business transcends mere secure file storage by offering a dynamic workspace that integrates teams, tools, and content seamlessly. Users can create, store, and share their cloud content from various applications, including Google Docs, Sheets, Slides, Microsoft Office files, and Dropbox Paper, alongside conventional files saved in Dropbox. With Dropbox Spaces, all your files and cloud-based content are centralized, allowing you to have your PowerPoint presentations situated alongside Google Docs, Trello boards, and any other tools your team utilizes. Accessing your team's work is a breeze, whether you’re on a computer, mobile device, or any web browser. By connecting platforms like Slack and Zoom, you can keep your team's files and related conversations organized in one location. Additionally, intelligently suggested files and folders empower your team by ensuring they have access to the necessary content at the right time. A robust and secure infrastructure, coupled with administrative tools for enhanced control and visibility, ensures that your organization’s data remains protected within Dropbox. This comprehensive approach not only boosts productivity but also fosters collaboration among team members, enhancing overall efficiency.

Box (NYSE:BOX) is the leader in Intelligent Content Management. Our platform enables organizations to fuel collaboration, manage the entire content lifecycle, secure critical content, and transform business workflows with enterprise AI. Founded in 2005, Box simplifies work for leading global organizations, including AstraZeneca, JLL, Morgan Stanley, and Nationwide. Box is headquartered in Redwood City, CA, with offices across the United States, Europe, and Asia. Visit box.com to learn more

Onehub is a secure file storage and sharing platform that can be used by businesses of all sizes. You can secure your data with bank-level encryption and our granular, role-based permissions structure. This allows you to control who has access to your content as well as share sensitive business files with confidence. Onehub provides a range of powerful business tools, including virtual data rooms, client portals and Google Docs integration. It also offers automatic watermarking, branded workspaces and custom agreements to increase and expand file sharing. You can customize your Onehub Workspace to give content sharing a professional, polished look. You can also create your own Client Portal. Onehub's virtual data room allows your business to send confidential information to clients and keep collaborators anonymous.

Simple for the novice, powerful for the professional Access SharePoint and OneDrive from the applications you already use. Edit Adobe, text, as well as all Office versions, easily. Access Box, S3, Google Drive and Dropbox, OneDrive, as well as other Office applications, from Windows Explorer or Mac Finder. WebDrive is an FTP client that you already know how use. Use FTP and SFTP servers to map drives letters for productivity and convenience. WebDrive is a WebDAV client that allows you to mount files at startup and lock them. It works in the same way as the native Windows WebDAV redirector. Large implementations will require less setup and installation time. You can customize and push the settings to all users without having to configure each computer. You can access remote files without syncing, and fill your device with copies of your files. This will improve security and reduce the risk of losing or stealing your device.

Tresorit is a zero‑knowledge, end‑to‑end encrypted cloud collaboration platform designed for individuals and organizations that need uncompromising data security. It enables users to securely store, sync, and share sensitive files while ensuring that only the data owner and explicitly authorized recipients can access the content. Files are encrypted on the user’s device before upload, and encryption keys are never available to Tresorit, eliminating the risk of provider‑side data access or exposure. Built as a privacy‑first alternative to conventional cloud services, Tresorit supports secure internal collaboration as well as controlled external data exchange. Teams can share files and folders with granular permission settings, revoke access at any time, and monitor activity to maintain full visibility and control. External sharing is protected through encrypted links and secure email delivery, replacing risky attachments and uncontrolled file transfers. Tresorit also enables secure, long‑term collaboration with clients and partners through encrypted data rooms that centralize documents, tasks, and approvals in a single protected workspace. Integrated digital signatures allow documents to be reviewed and signed without leaving the encrypted environment, preserving security throughout the entire document lifecycle. With advanced admin controls, auditability, and configurable data residency options, Tresorit is built to support strict regulatory and compliance requirements. By combining strong security with ease of use, Tresorit allows organizations to collaborate productively while maintaining confidentiality, ownership, and trust over their most sensitive data.

PreVeil revolutionizes end-to-end encryption, offering robust protection for organizations' emails and files against threats like phishing, spoofing, and business email compromise. The platform is designed to be user-friendly for employees and straightforward for administrators. With PreVeil, enterprises gain access to a secure and intuitive encrypted email and cloud storage solution that safeguards critical communications and documents. Utilizing top-tier end-to-end encryption, PreVeil ensures that data remains secure throughout its lifecycle. Additionally, the platform features a “Trusted Community” that facilitates safe communication among employees, contractors, vendors, and other external parties. This innovative feature allows users to share sensitive information confidently, knowing they are protected from common cyber threats. Ultimately, PreVeil empowers organizations to maintain a high level of security while fostering a collaborative environment.

OwnCloud is an open-source software platform for content collaboration. It allows teams to share and collaborate on files from any device, regardless of location. OwnCloud is used by more than 100 million people worldwide as an alternative to public cloud services. This allows users to opt for greater digital sovereignty, security, and data protection.

The Barracuda Cloud Archiving Service offers a secure, cloud-based solution for organizations to effectively meet stringent compliance standards and efficiently handle e-discovery requests. This service is particularly well-suited for integration with platforms like Office 365 and G Suite, utilizing the Barracuda Cloud to store data indefinitely, safeguarding it from alterations or deletions. By ensuring that users can access every message ever sent or received from any device, productivity among end users is significantly enhanced. Furthermore, the Barracuda Cloud Archiving Service seamlessly integrates with various email platforms, such as Office 365 and Exchange, to create a comprehensive cloud archive without necessitating any extra hardware or software on the customer’s end. With features like a versatile Outlook add-in, mobile applications for both iOS and Android, along with a specific web interface, users can easily retrieve and restore any message, even those deleted from the mail server, ensuring that no important communication is ever permanently lost. This comprehensive accessibility empowers organizations to maintain transparency and efficiency in their communication practices.

This product combines three essential functions: file synchronization and sharing, real-time backup, and robust antivirus protection, including ransomware defense. Users can effortlessly save, sync, and access the latest versions of their files across various devices with unlimited versioning capabilities. Additionally, it allows for immediate restoration of files stored in the cloud, on desktops, and mobile devices. To minimize the impact of ransomware attacks, it features integrated anti-malware and antivirus solutions powered by Bitdefender. Protecting against compromised passwords is made easy with two-factor authentication, which can be managed through the HostPilot control panel. Both new and existing SecuriSync users benefit from Bitdefender’s advanced security features at no additional cost. The two-factor authentication provides administrators with an extra layer of security, while real-time backups ensure that all PC files and mobile photos and videos are secure. Users can restore files to any previous point effortlessly with a single click, ensuring that their data is both safeguarded and easily recoverable from ransomware incidents, thus enhancing overall peace of mind.

TeraBox Technology offers cloud computing services and software, such as online backup, cloud server, and so forth. We offer cloud and fair-cost solutions to individuals and small businesses. It is possible to increase resources and upgrade equipment space due to its high availability. High reliability, high bandwidth, multi-layer security. High-quality IT team, available to support customers 24/7. Use agile frameworks to provide a solid synopsis for high-level overviews. Collaboration is key to maximizing the overall value proposition. Iterative strategies for corporate strategy encourage collaborative thinking. Through workplace diversity and empowerment, organically expand the holistic view of disruptive innovation. Large storage of 1024 GB and multi-end collaboration. Provides network backup and file synchronization. Large space, speed, safety, and stability.

NAKIVO Backup & Replication provides a top-rated, fast, and affordable backup, ransomware recovery, and disaster recovery solution that works in virtual, physical and cloud environments. The solution provides outstanding performance, reliability and management for SMBs, enterprises and MSPs.

FileCloud is a hyper-secure EFSS (enterprise file sync and share) platform providing industry leading compliance, data governance, data leak protection, data retention and digital rights management capabilities. FileCloud is a leader in content governance and collaboration for unstructured data, trusted and used worldwide across Global 1000 enterprises, educational institutions, government organizations, and service providers. Granular control of content sharing is fully integrated into the stack through comprehensive audit logs and access permissions, and the Compliance Center helps with regulations like GDPR, HIPAA, and NIST 800-171 (among others). FileCloud also provides Zero Trust File Sharing® an industry first innovation that allows users to share sensitive data via an encrypted zip file that cannot be accessed by unauthorized users, even in the event of a data breach. FileCloud helps customers solve complex challenges in enterprise file sharing, privacy, compliance automation and governance across public, private, and hybrid cloud environments. In addition to its enterprise file sharing solution, FileCloud’s product portfolio also includes Signority (acquired in May 2024), a Canadian-based e-signature and document workflow platform.

Azure NetApp Files (ANF) is a high-performance file storage solution designed specifically for core business applications within the Microsoft Azure ecosystem. This service simplifies the migration and operation of complex, performance-demanding, and latency-sensitive applications for enterprise line-of-business and storage experts without requiring any code modifications. ANF is frequently utilized as the foundational shared file storage in various scenarios, including the seamless migration of POSIX-compliant Linux and Windows applications, as well as critical systems like SAP HANA, databases, high-performance computing infrastructures, and enterprise web applications. With support for multiple protocols, it facilitates the effortless transfer of both Linux and Windows applications to Azure. Different performance tiers are available to ensure workloads align closely with their specific performance needs. Furthermore, deep integration with Azure guarantees a smooth and secure user experience, eliminating any learning or management challenges. Additionally, ANF holds leading certifications such as SAP HANA, GDPR, and HIPAA, ensuring that even the most demanding workloads can be safely migrated to Azure without concern. Overall, Azure NetApp Files stands out as a robust solution for enterprises looking to optimize their cloud storage capabilities.

RaiDrive is an intuitive and powerful software solution that allows users to manage cloud storage accounts with ease. RaiDrive allows you to connect to more than 30 cloud storage services, including Google Drive, OneDrive Dropbox, MEGA, AWS and MEGA, as well as FTP SFTP WebDAV NAS like a USB Drive. This allows you to manage and access your files as if the files were locally stored. RaiDrive is a powerful tool that offers features such as secure access, multiuser support, network drive creation and multi-user support. RaiDrive is a reliable and robust platform that can be used to streamline cloud storage management, or to collaborate with other team members.

Folderit helps organizations keep documents searchable, controlled, and audit-ready. The platform combines OCR search, metadata, version control, audit trails, reminders, previews, and secure access with workflows for approvals, acknowledgements, reviews, and e-signing. For more advanced use cases, Folderit supports retention automation, document numbering, API integrations, eForms, SSO, and granular access management. It is designed for companies that want structured document control without sacrificing usability, and it also supports Single-Tenant and On-Premises deployment options for stronger governance needs. Folderit’s current trust and compliance positioning includes ISO 27001 certification, Cyber Essentials certification, and logical tenant segregation in its shared cloud environment.

Your files are securely stored in the cloud according to your preferences. Aurora Files serves as an open-source file storage solution tailored for small teams and individual users alike. By being self-hosted on your own infrastructure, you maintain complete control over your data at all times. You can easily share files and folders with your team members. The system allows for a backend that utilizes either local or remote S3-compatible storage on your server. Any WebDAV client, including the familiar Windows Explorer, can be used to access your data seamlessly. Additionally, you can customize the look of Aurora Files by rebranding it with your own colors, styles, and images, which also extends to mobile applications. Files can be accessed from any device, whether it’s iOS or Android, ensuring flexibility in your workflow. The platform supports two-way synchronization of local folders and cloud storage, making it suitable for both personal use and corporate environments. You can also share access to folders and files simply by providing a link, which is particularly convenient. Developers will find it beneficial as it allows for easy code customization, integration with other systems, and the creation and maintenance of plugins. Notably, Aurora Files comes equipped with the Paranoid Encryption module, offering robust AES-256 encryption directly in the browser to keep your data secure. This level of security ensures that your sensitive files remain protected at all times.

As a global IaaS solutions provider, phoenixNAP helps organizations of different sizes meet their IT performance, security, and scalability needs. Delivered from strategic edge locations in the U.S., Europe, Asia-Pacific, and Latin America, phoenixNAP's solutions are globally available, enabling businesses reach their target locales. Its colocation, HaaS, private and hybrid cloud, backup, disaster recovery, and security services are available on an opex-friendly model, providing flexibility and cost-efficiency. Based on world-class technologies, they provide redundancy, security, and advanced connectivity. Companies of all verticals and sizes can leverage phoenixNAP infrastructure for their evolving IT requirements at any stage of growth.

DoubleClue, developed by HWS Group in Bavaria, serves as an Identity and Access Management solution designed to oversee identities, permissions, and access. It fortifies corporate networks against cyber threats aimed at digital identities, also known as the "human factor," by employing advanced multi-factor authentication methods. Additionally, the platform incorporates a comprehensive password management system and secure cloud storage for sensitive information. With a strong focus on identity security, password protection, and cloud safety, all safeguarded by adaptive multi-factor authentication (MFA), DoubleClue can be deployed either on-premises or in the cloud. This innovative solution addresses the critical aspect of business security that firewalls and antivirus software often overlook—the human element, which remains the most susceptible component of IT security. By utilizing a robust all-in-one platform, businesses can ensure that all digital accesses, applications, passwords, and sensitive data are well-protected. In today’s digital work environment, where employees seek the utmost flexibility, DoubleClue empowers them to operate from any location using various devices without sacrificing their IT security. Furthermore, this adaptability is crucial as remote work becomes increasingly prevalent.

Access PDF and Microsoft Office documents directly through the web. Additionally, the native formats for Animation Desk, NoteLedge, and Write-on Video are also compatible. You can easily request files from others using a request link, and share large files within a team using a shared folder. To ensure privacy, users have the ability to establish password protection and access permissions. Files stored on Kdan Cloud are secured with TSL/SSL and RES encryption methods. With just a few taps in applications like PDF Reader, Animation Desk, NoteLedge, Markup, Write-on Video, and Pocket Scanner, you can back up your projects and files effortlessly. Kdan Cloud not only improves your experience with Creativity 365 and Document 365 suites but also functions as an independent cloud solution. Organize and manage both personal and shared files, accessing them anytime and from any location through Kdan Cloud. By subscribing to Creativity 365, you gain unlimited access to premium features across various devices, including smartphones, tablets, and desktops, as well as 1TB of Kdan Cloud storage and credits for file conversion, providing an all-encompassing creative toolkit. This comprehensive package enhances productivity while ensuring your data remains secure and easily accessible.

Nutanix Files Storage offers a straightforward, adaptable, and innovative scale-out file storage solution tailored for the data-centric age. With just one click, you can perform updates seamlessly and oversee all storage functions from a unified interface. It allows for flexible scaling, whether up or out, using your preferred hardware while providing a cloud-like consumption model. Gain insights into your data usage, track who is accessing it, and leverage automated management for enhanced control. According to an IDC study, Nutanix Files Storage minimizes operational overhead by 66% compared to traditional siloed storage, leading to a remarkable 414% return on investment and a payback period of just seven months. Designed to support billions of files and tens of thousands of user sessions, Nutanix Files Storage can easily accommodate growing environments; a single click is all it takes to scale your cluster elastically, whether by enhancing compute and memory for file server VMs or by adding additional file server VMs. This comprehensive platform also allows you to utilize the same resources for object and block storage, providing a versatile solution for diverse storage needs. Users can thus experience both efficiency and flexibility in managing their data ecosystems.

SOLIXCloud CDP provides a cloud-based data management solution tailored for contemporary data-centric businesses. Utilizing open-source and cloud-native technologies, it enables organizations to effectively handle and analyze their structured, semi-structured, and unstructured data, facilitating advanced analytics, regulatory compliance, infrastructure efficiency, and robust data security. Key components of this platform include Solix Connect for efficient data ingestion, Solix Data Governance, Solix Metadata Management, and Solix Search, collectively forming a holistic framework for managing cloud data. This framework supports the development and operation of data-driven applications, including SQL data warehouses, machine learning models, and artificial intelligence systems, while addressing the increasing complexities associated with data management regulations, data retention policies, and consumer privacy concerns. In this way, SOLIXCloud CDP empowers companies to navigate the evolving landscape of data management with confidence.

KeepItSafe offers a wide range of Data Protection-as-a-Service solutions, ensuring data availability through cloud backup, disaster recovery, mobile endpoint management, and support for SaaS applications. With over 20 data centers worldwide, KeepItSafe adheres to strict compliance standards such as SOC 2, HIPAA, and PCI, while providing tailored managed services along with round-the-clock support. Known for being one of the most secure and scalable options in the industry, their cloud backup and on-demand recovery services include Backup-as-a-Service (BaaS) with comprehensive monitoring and support available 24/7. As a holistic disaster recovery and online backup provider, KeepItSafe offers fully managed Disaster Recovery as a Service (DRaaS) that safeguards and replicates data across numerous secure off-site servers, ensuring rapid failover during any critical incident. Additionally, their powerful endpoint backup solution enhances file sharing, collaboration, and data-loss prevention, all integrated into one cohesive platform. KeepItSafe Mobile empowers IT managers with the necessary tools to effectively safeguard their organizations from unexpected data disasters, making it an invaluable resource for proactive data management.