What Is A SharePoint Private Cloud
A SharePoint private cloud is a dedicated hosting environment where SharePoint Server is deployed on infrastructure exclusively allocated to a single organization, rather than shared with other tenants as in SharePoint Online. This deployment model provides maximum control over data residency, security configurations, customization capabilities, and performance tuning, making it the preferred choice for organizations with strict regulatory requirements, custom code dependencies, or specific infrastructure mandates that SharePoint Online cannot accommodate.
What Defines a SharePoint Private Cloud?
A SharePoint private cloud differs from both on-premises SharePoint and SharePoint Online in several fundamental ways. It combines the control of on-premises with the operational benefits of cloud infrastructure, typically hosted in a provider's data center or on dedicated Azure/AWS infrastructure managed by the organization or a hosting partner.
- Dedicated infrastructure: Physical or virtual servers exclusively allocated to your organization, ensuring no resource contention with other tenants and predictable performance
- Full administrative control: Complete access to SharePoint Central Administration, SQL Server databases, IIS configuration, and Windows Server settings that are restricted in SharePoint Online
- Custom code support: Full support for farm solutions, sandbox solutions with full-trust proxies, custom timer jobs, and server-side code that SharePoint Online does not allow
- Data sovereignty: Complete control over data location, with the ability to specify exact data center regions, countries, or even specific facilities for compliance with data residency laws
- Network isolation: Deployment within private network segments with custom firewall rules, VPN-only access options, and no exposure to the public internet if required
- Customizable SLAs: Negotiate specific uptime commitments, RTO/RPO targets, and support response times based on your organization's requirements rather than accepting Microsoft's standard SLA
SharePoint Private Cloud Architecture
A properly architected SharePoint private cloud follows Microsoft's recommended topology guidelines while leveraging cloud infrastructure services for scalability, high availability, and disaster recovery. The architecture typically includes multiple server roles distributed across availability zones.
- Web front-end servers: Load-balanced servers handling HTTP requests, rendering pages, and executing client-side queries. Minimum two servers for high availability
- Application servers: Dedicated servers running SharePoint service applications including Search, User Profile, Managed Metadata, and custom services
- SQL Server cluster: Always On Availability Groups or failover cluster instances providing high availability for SharePoint content and configuration databases
- Search topology: Distributed search components (crawl, content processing, index, query, analytics) scaled based on content volume and query load
- Office Online Server: Dedicated servers for browser-based viewing and editing of Office documents within SharePoint
- Disaster recovery: Secondary data center with SQL Server log shipping, database mirroring, or Always On replicas for business continuity
When to Choose Private Cloud Over SharePoint Online
SharePoint Online (part of Microsoft 365) is the right choice for most organizations. However, specific scenarios make a private cloud deployment the better option. Understanding these scenarios prevents organizations from either over-investing in private infrastructure or encountering limitations in SharePoint Online that block critical business requirements.
- Custom farm solutions: Legacy applications using server-side code (SSOM, event receivers, timer jobs) that cannot be migrated to SharePoint Framework (SPFx) or Azure Functions
- Regulatory data residency: Requirements to keep data within specific geographic boundaries, government-only infrastructure, or air-gapped networks not met by Microsoft's GCC High or DoD offerings
- Performance requirements: High-throughput scenarios with millions of documents or thousands of concurrent users requiring dedicated compute and network resources
- Integration dependencies: Deep integration with on-premises line-of-business applications through BCS (Business Connectivity Services) or custom service applications
- Security classification: Data classified at levels requiring physical infrastructure isolation beyond what multi-tenant cloud environments provide
- Total cost at scale: Organizations with 10,000+ users may find private cloud more cost-effective than per-user SharePoint Online licensing when factoring in total Microsoft 365 suite cost
Private Cloud Hosting Options
Organizations have several options for hosting a SharePoint private cloud, each with different levels of management responsibility, cost structure, and flexibility. The right choice depends on existing infrastructure investments, IT staff capabilities, and compliance requirements.
- Azure IaaS: Deploy SharePoint Server on Azure Virtual Machines with Azure networking, storage, and security services. Provides cloud scalability with full SharePoint control. Best for organizations already invested in Azure
- AWS/GCP IaaS: Similar to Azure IaaS but on alternate cloud providers. Suitable for organizations with existing cloud commitments outside the Microsoft ecosystem
- Managed hosting providers: Specialized SharePoint hosting providers (Rackspace, Fpweb.net) manage the infrastructure while your team manages SharePoint configuration and content
- On-premises data center: Deploy on your own hardware in your own facilities. Maximum control but highest management burden and capital expenditure
- Colocation facilities: Your hardware in a third-party data center, combining infrastructure ownership with professional facility management, power, and cooling
Hybrid Approach: Private Cloud + SharePoint Online
Many enterprises adopt a hybrid approach that combines SharePoint private cloud for specific workloads with SharePoint Online for general collaboration. Microsoft supports this configuration through hybrid features that provide a unified experience across both environments.
- Hybrid search: Unified search results spanning both private cloud and SharePoint Online content from a single search center
- Hybrid taxonomy: Shared managed metadata term store that synchronizes between environments
- Hybrid OneDrive: Redirect OneDrive for Business from on-premises to SharePoint Online while keeping other workloads private
- Hybrid sites: Follow sites and access recent documents across both environments through the Microsoft 365 app launcher
Why Choose EPC Group for SharePoint Private Cloud
EPC Group has over 28 years of experience architecting, deploying, and managing SharePoint environments of all sizes and deployment models. As a Microsoft Gold Partner, our team has designed private cloud SharePoint farms for Fortune 500 organizations, government agencies, and healthcare systems with the most demanding compliance requirements. Our founder, Errin O'Connor, has authored 4 bestselling Microsoft Press books including comprehensive guides on SharePoint architecture and large-scale deployments.
Need SharePoint Private Cloud Architecture?
Let EPC Group's SharePoint infrastructure experts design and deploy a private cloud environment that meets your security, compliance, and performance requirements.
Frequently Asked Questions
How much does a SharePoint private cloud cost compared to SharePoint Online?
SharePoint Online costs approximately $5-$12.50 per user per month as part of Microsoft 365 plans. A SharePoint private cloud on Azure IaaS typically costs $3,000-$15,000+ per month for infrastructure (VMs, storage, networking) depending on farm size, plus SharePoint Server licensing ($7,500-$9,000+ per server) and SQL Server licensing. For organizations under 1,000 users, SharePoint Online is almost always more cost-effective. At 5,000+ users, the per-user economics may favor private cloud, particularly when specialized compliance or performance requirements exist.
Is SharePoint Server still being developed by Microsoft?
Yes, Microsoft continues to release new versions of SharePoint Server. SharePoint Server Subscription Edition (SE) is the current version, receiving feature updates through the subscription model rather than numbered versions. Microsoft has committed to continuing SharePoint Server development for customers who require on-premises or private cloud deployments. However, new features are typically released first in SharePoint Online before being ported to SharePoint Server, so private cloud environments may lag behind the cloud offering in feature availability.
Can I migrate from SharePoint private cloud to SharePoint Online later?
Yes, migration from SharePoint private cloud to SharePoint Online is fully supported using tools like Microsoft's SharePoint Migration Tool (SPMT), ShareGate, or AvePoint. Content migration (sites, lists, libraries, documents) is straightforward. The challenges arise with custom code: farm solutions must be rewritten as SPFx solutions or Azure-based alternatives, custom workflows must be rebuilt in Power Automate, and BCS connections must be replaced with custom connectors or Microsoft Graph. EPC Group recommends a phased migration with thorough inventory and remediation planning.
What compliance certifications does a SharePoint private cloud support?
A SharePoint private cloud can be configured to meet virtually any compliance standard because you control all infrastructure, security, and data handling. Common certifications supported include HIPAA (healthcare), FedRAMP (government), ITAR (defense), SOC 2 Type II (service organizations), PCI DSS (payment card industry), CJIS (criminal justice), and GDPR (EU data protection). The compliance posture depends on the hosting environment, network configuration, encryption implementation, and operational procedures, which must be documented and audited independently.
How do I ensure high availability for a SharePoint private cloud?
High availability for SharePoint private cloud requires redundancy at every tier: load-balanced web front-end servers (minimum 2), redundant application servers, SQL Server Always On Availability Groups with automatic failover, and distributed search topology. Infrastructure should span multiple availability zones or data centers. For disaster recovery, implement a secondary farm in a geographically separate location with SQL Server log shipping or asynchronous replicas. Target 99.9%+ uptime with documented RTO under 4 hours and RPO under 1 hour for critical workloads.
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