What is BaaS? Backup as a Service is a managed offering that automatically copies your data to secure offsite storage on a defined schedule, so you can restore files, databases, or entire systems after deletion, corruption, hardware failure, or a ransomware attack. The provider owns and operates the backup infrastructure, storage, and software. You define what gets protected, how often, and how long it’s retained.
One clarification up front, because search results muddy it: BaaS also stands for Banking as a Service in fintech. Different industry, different acronym collision. In infrastructure and data storage and backup, BaaS means managed backup, and that’s what this article covers.
Backup is the least glamorous line item in IT and the one most likely to save your company. It’s also the discipline attackers now study hardest, which has changed what a competent backup service has to look like. More on that below, because it’s the part most “what is BaaS” explainers skip.
How Does Backup as a Service Work?
BaaS software captures copies of your protected systems, physical servers, VMs, databases, endpoints, and transmits them to the provider’s storage over an encrypted connection, following a schedule and retention policy you set. Modern platforms move only changed blocks after the first full copy, which keeps backup windows short and bandwidth impact low. When you need something back, you restore at whatever granularity the situation calls for: a single file somebody deleted, a database table, or a full server image.
What you’re really buying, though, isn’t the copy mechanism. It’s the operational discipline around it. Managed backup means someone is watching job success rates, managing storage capacity, patching the backup software, and verifying restorability, the maintenance work that quietly decays when it competes with tickets for an internal team’s time. At ValorC3 our backup as a service runs on Veeam Data Cloud, and we’re a Veeam Gold Service Provider, which in practice means the people managing your backup jobs have deep bench experience on the platform. When I walk a prospect through it, the restore demo gets more attention than the backup demo. That’s the correct instinct. Backups are a means. Restores are the product. Veeam’s BaaS primer is a solid vendor-side overview of the model’s mechanics.
What Is the 3-2-1-1-0 Backup Rule?
The 3-2-1-1-0 rule is the modern standard for data backup architecture: keep 3 copies of your data, on 2 different media or platforms, with 1 copy offsite, 1 copy immutable or offline, and 0 errors, meaning backups are verified as restorable. It extends the older 3-2-1 rule with the two additions that ransomware forced on the industry: the immutable copy and the verification requirement.
Each element closes a specific failure mode. Three copies survive a bad copy. Two platforms survive a platform-level fault. Offsite survives a site-level event like fire or flood. Immutable survives an attacker with admin credentials. And zero errors survives the most common failure of all, the backup that ran green for months and restores nothing. Miss any one element and there’s a named, documented way to lose everything. Valor Cloud BaaS is built to this standard, immutable copy included.
Why Did Ransomware Rewrite the Backup Playbook?
Because attackers figured out that your backups are the reason you don’t pay. Veeam’s 2025 ransomware research found that 89% of attacks in the prior year went after the victim’s backup repositories, with about a third of those repositories modified or deleted. Encrypting production is the visible part of a modern attack. Destroying your ability to recover is the part that gets the ransom paid.
That’s what immutable storage is for. An immutable backup is written once and locked against modification or deletion for a defined period, by anyone, including an administrator whose credentials have been stolen. The attacker can compromise the domain, reach the backup console, and still not touch those recovery points. CISA’s ransomware guidance has made offline or immutable copies a baseline recommendation for exactly this reason. My blunt rule from years of running backup platforms: a backup an attacker can delete is a convenience, not a safeguard. If your current provider can’t point to where your immutable copy lives, you don’t have one.
Do Microsoft 365 and Other SaaS Apps Back Up Your Data?
No, not in the way most organizations assume. SaaS providers engineer for the availability of the service, not the recoverability of your data. Under the shared responsibility model that governs Microsoft 365, Entra ID, Salesforce, and nearly every other SaaS platform, the application staying online is the vendor’s job, and your data is yours. Delete a mailbox, lose it to a departed admin’s cleanup script, or watch ransomware sync encrypted files through a connected client, and the native retention windows run out fast.
It still surprises me how often this lands as news in discovery calls. Teams that would never run a server without backup run their entire email, identity, and CRM stack with none. Modern BaaS closed this gap: Veeam Data Cloud protects SaaS platforms alongside servers and VMs, with the same retention policies and the same immutability. If your backup strategy stops at your infrastructure, it stops short of where a growing share of your business data actually lives.
What Does Data Loss Cost Compared to Backup Spend?
The asymmetry here is almost embarrassing to type. In Sophos’s 2025 study, organizations with 100 to 250 employees, the classic mid-market profile, averaged $638,536 in ransomware recovery costs, excluding any ransom. The mean across all sizes was $1.53 million, the median ransom payment among those who paid was $1 million, and IBM pegs the average cost of a data breach in the multiple millions once detection and lost business are counted.
Against that, price protecting a 15 TB environment. At market rates for managed backup with immutable offsite copies, roughly $10 to $20 per TB monthly depending on retention and options, call it $15 per TB. That’s $225 a month, or $2,700 a year. Set against the mid-market average recovery cost alone, one prevented worst case pays for about 236 years of the service ($638,536 divided by $2,700). Nobody frames budget requests that way, and the numbers vary by environment, but the shape of the math doesn’t change: this is the cheapest insurance in your entire stack. What’s the counterargument, really?
Is Backup Enough for Business Continuity?
For most of your systems, yes. For a few of them, no, and knowing which is which matters more than either product. Backup answers “can we get the data back?” It doesn’t answer “can we keep operating while we do?” Restoring a large environment means rebuilding infrastructure first and moving terabytes second, a sequential process measured in hours or days. With 57% of major outages now costing over $100,000, workloads that can’t wait that long need disaster recovery, where a replica environment stands ready to take over in minutes. I’ve written a companion explainer on what DRaaS is and a direct DRaaS vs BaaS comparison with the worked math on tiering workloads between them.
The short version: backup as a service is the foundation everything sits on, including DR. Nearly every environment I design includes it. The design question is which workloads need the additional layer, and with Valor Cloud you can run either service or both, so tiering is a configuration decision rather than a second procurement.
Common Questions About Backup as a Service
What’s the difference between BaaS and just running my own backups? Ownership of the operational burden. With BaaS, the provider maintains the backup infrastructure, software, storage capacity, and monitoring; your team defines policy and requests restores. Self-managed backup works when someone genuinely owns it. It fails when backup is everyone’s third job.
What is immutable storage in backup? Storage where recovery points are locked against modification or deletion for a set retention period, even by administrators. It’s the control that keeps ransomware operators, who now target backup repositories in the large majority of attacks, from destroying your recovery option along with production.
How often should data be backed up? Match frequency to how much data each system can afford to lose. Daily is a common floor; transaction-heavy systems often warrant intervals of hours or continuous protection. If losing more than a few minutes of a workload’s data is unacceptable, that workload has outgrown backup schedules and belongs in a replication conversation.
How long should backups be retained? Long enough to satisfy your regulatory obligations and to reach back past a slow-burn incident, since attackers often dwell in networks for weeks before acting. Common patterns pair short-term daily recovery points with weekly, monthly, and annual archives. Retention drives storage cost, so set it per data class rather than one policy for everything.
Does backup play a role in cloud migration? A restore-tested backup taken before cutover is the non-negotiable safety net under any migration; with it, a failed cutover costs you a rollback instead of a crisis. Backup data can also seed the target environment, shrinking the transfer window during the move itself.
Does backup protect against ransomware? It’s your recovery path, provided the backups themselves survive the attack. That requires an immutable or offline copy, isolation from production credentials, and verified restores. Backups without those properties are increasingly the first casualty of the attack rather than the recovery from it, which is one reason the share of enterprises recovering from backups fell to 53% in 2025, a multi-year low.
The Restore Is the Product
Ask your team one question this week: when did we last restore something substantial from backup, on purpose, as a test? If the answer involves a pause, that’s your project, and it costs almost nothing to fix. And if you’re weighing managed backup, evaluating providers, or trying to figure out which workloads deserve more than backup, bring us your requirements. We’ll show you the platform restore-first, because that’s the half you’re actually buying.
Allan Pudlitzke, Solution Engineer
Allan Pudlitzke is a solutions engineer at ValorC3 Data Centers in Boise, Idaho, where he designs cloud, backup, and disaster recovery solutions. He holds Veeam VMCE 2025, VMware VCP, and Zerto certifications, and spent years running multisite backup and site recovery platforms before moving into presales solution design. His working view: most infrastructure problems aren’t technical, they’re architectural decisions made under outdated assumptions, and his job is fixing the assumptions.