What is cloud storage? At its most fundamental level, cloud storage is a way of storing and accessing data remotely.
It is a simple concept, but it is no exaggeration to say that cloud storage underpins a great deal of modern life.
Whether it’s the photos on your phone or the financial reports of a market leading conglomerate, cloud storage has a role to play.
Since the COVID-19 pandemic, cloud storage has helped facilitate the rise in remote working, allowing employees to access company documents and projects from anywhere in the world.
In fact, when lockdowns were first enforced in 2020, cloud storage played a key role in preventing the digital economy and education systems from stalling — something that would have been unthinkable before its advent.
The leading cloud storage companies are always innovating, making improvements to the security, speed and scale of their products.
This week, we take a look at 10 of the best.
10. Mega
CEO: Shane Te Pou
Employees: 200+
HQ: Auckland, New Zealand
Founded: 2013
Mega refers to itself as ‘The Privacy Company’ — and for good reason.
Its defining feature is user-controlled, zero-knowledge encryption, meaning not even Mega itself can access your files — a level of privacy not provided by most mainstream providers.
This approach has made Mega a compelling choice in the journalism sector, where security is a must.
While its real-time collaboration features aren’t as developed as some of its rivals, its slick interface, integrated secure chat and excellent performance make it a powerful and private haven for your data.
What’s more, you’ll have access to a generous 20GB of free storage when first signing up.
9. Box
CEO: Aaron Levie
Employees: 2,810
HQ: California, USA
Founded: 2005
Box is a business-oriented cloud storage solution. The firm offers personal plans, but its real strengths lie in enterprise-grade security, compliance frameworks and advanced collaboration tools.
Integrations are key to this. With Box, users can link their storage seamlessly with Microsoft 365, Google Workspace and more than 1,500 other digital services.
Features like Box Sign for e-signatures, Box Notes for collaboration and granular administrative controls make it a powerhouse for managing complex content workflows, particularly in regulated industries like healthcare and finance.
8. pCloud
CEO: Tunio Zafer
Employees: 58
HQ: Baar, Switzerland
Founded: 2013
Swiss firm pCloud has carved a unique niche for itself in the cloud storage sector.
Its lifetime subscription plans, offering a compelling one-time payment to escape the cycle of recurring fees.
With pCloud, you can expect a user-friendly interface with strong performance and a 10GB free tier.
Then, for an additional fee, its pCloud Crypto folder can provide client-side, zero-knowledge encryption for a user's most sensitive files, offering a secure vault within the broader account.
pCloud also has a high quality media playback feature and Kodi integration, which makes it a favourite for storing and streaming large music and video collections.
7. Sync.com
CEO: Thomas Savundra
Employees: 51-200
HQ: Toronto, Canada
Founded: 2011
Sync.com is a champion of privacy, offering end-to-end, zero-knowledge encryption as a standard, non-negotiable feature across all plans, including its 5GB free tier.
Based in Canada, its adherence to strict privacy laws like PIPEDA makes it a trusted choice for secure file sharing and collaboration.
With valuable features like no file size limits, extensive file version history —up to 365 days on paid plans — and compliance with standards like HIPAA, Sync.com provides a solid, secure alternative to mainstream providers, prioritising data protection.
6. Apple iCloud
CEO: Tim Cook
Employees: 164,000 (Apple Inc.)
HQ: California, USA (Apple Inc.)
Founded: 2011 (iCloud)
For users of Apple products, iCloud is the obvious choice when it comes to remote storage.
In fact, iCloud is less a choice and more a default feature of all Apple products.
Its magic lies in its seamless integration with iPhones, iPads and Macs, which help users to sync photos, files, notes and more, often with no user intervention required.
While its 5GB free tier is fairly modest, paid iCloud+ plans are affordable and add valuable privacy features like Private Relay and Hide My Email.
Its primary limitation is its intentionally Apple-centric nature, with no Android app and restricted file sharing with non-Apple users.
5. Dropbox
CEO: Drew Houston
Employees: 2,693
HQ: California, USA
Founded: 2007
Back in 2007, Dropbox helped to pioneer the personal cloud storage market.
Since then, the Californian firm has remained a benchmark for this kind of technology thanks to its ease of use and reliable, high-speed file syncing.
Its clean, intuitive interface and fast performance make sharing and accessing files effortless across every major platform.
It has evolved from a simple sync folder into a rich collaboration hub with features like Dropbox Paper for real-time document editing and extensive third-party app integrations.
While its free 2GB plan is among the smallest on the market — and it lacks default zero-knowledge encryption — its powerful collaboration tools and unparalleled usability keep it a top contender in both the workplace and private sphere.
4. IDrive
CEO: Raghu Kulkarni
Employees: 350
HQ: California, USA
Founded: 1995
If you’re looking for value, you likely won’t find better than IDrive.
The US-based firm often provides the best price-per-terabyte on the market, but it is more than just a storage solution.
With IDrive, users are able to protect an unlimited number of devices — PCs, Macs, phones and servers —under one single account, a feature for which most rivals charge per device.
Features like complete disk image backup for Windows, continuous data protection and the IDrive Express physical data shipment service make it a robust and versatile choice for both personal and small business data protection, all while maintaining strong 256-bit AES encryption.
3. Google (Google Drive & Google Cloud)
CEO: Sundar Pichai (Alphabet Inc.)
Employees: 182,502 (Alphabet Inc., 2023)
HQ: California, USA
Founded: 1998 (Google), 2008 (Google Cloud)
Google’s offering is a powerful two-pronged entity that leverages its dominance in search and software to create a compelling cloud ecosystem.
For consumers and businesses, Google Drive is the heart of Google Workspace, offering a generous 15GB of free storage and unparalleled real-time collaboration through its tightly integrated Docs, Sheets and Slides applications.
For developers and enterprises, Google Cloud is a top-three infrastructure provider that is rapidly gaining market share.
Google’s key differentiator is its mastery of data, AI and ML, which it is increasingly integrating into its storage services to offer advanced analytics, intelligent automation and industry-leading performance for AI workloads.
2. Microsoft (OneDrive & Azure)
CEO: Satya Nadella
Employees: 228,000
HQ: Washington, USA
Founded: 1975
Microsoft can do it all when it comes to cloud storage — both enterprises and consumers will find huge value in its products.
As a part of the Microsoft ecosystem, OneDrive users get total integration into Windows and the Microsoft 365 suite, making it the default, feature-rich choice for hundreds of millions of users.
Its powerful file sharing, deep collaborative editing capabilities within Office apps and unique security features like Personal Vault for sensitive files make it a perennial Editors' Choice winner.
On the infrastructure side, Microsoft Azure is the world’s second-largest cloud provider.
With Azure, companies get access to durable, secure and scalable solutions, from blob storage to high-performance file sharing.
1. Amazon Web Services (AWS)
CEO: Matt Garman
Employees: 1,608,000 (Amazon.com Inc., 2021)
HQ: Seattle, Washington, US
Founded: 2006 (AWS)
AWS is the undisputed global leader when it comes to cloud storage solutions.
Its storage service, Amazon S3 (Simple Storage Service), is the foundation upon which much of the modern internet is built.
While it’s not a consumer-facing application like Dropbox, S3’s impact is unparalleled.
It offers industry-leading scalability, performance and a legendary durability of 99.999999999%, meaning that businesses’ data is in extraordinarily safe hands.
It is the go-to solution for data lakes, application hosting, backup and archiving for millions of customers, from nascent start-ups to the world's largest enterprises.
AWS’ relentless innovation, vast service portfolio and sheer market dominance make it a foundational force in cloud storage today.
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