SharePoint Online integrates with almost every major US enterprise tool through four reusable patterns: Microsoft Graph for unified Microsoft 365 access, Power Automate for declarative workflows across hundreds of connectors, native vendor connectors for high-volume systems like Salesforce, and custom APIs for line-of-business systems that need bespoke logic. The practical answer to "what does SharePoint integrate with" in 2026 is: nearly anything, through one of those four patterns, with widely different cost, performance, and maintenance profiles depending on which pattern fits the use case.
This guide walks the patterns first, then surveys integration with the ten US business tools most often requested in SharePoint engagements - Salesforce, Microsoft Dynamics 365, Microsoft Teams, Power BI, Outlook, ServiceNow, SAP, Workday, DocuSign, and Adobe Sign - and closes with common failure modes and the security considerations every integration design has to address. It is written for US IT leaders, CIOs, infrastructure architects, SharePoint administrators, and digital workplace owners evaluating SharePoint Online as a content surface.
Integration Patterns That Power Everything
Four integration patterns cover almost every SharePoint Online integration request. (1) Microsoft Graph - a unified REST API across SharePoint, OneDrive, Teams, Outlook, and the rest of Microsoft 365 - is the right pattern when the integration is Microsoft-to-Microsoft or when the integrating system can consume a graph API. (2) Power Automate - the low-code workflow engine with hundreds of pre-built connectors - is the right pattern when the workflow is declarative, the volume is moderate, and a low-code owner can maintain it. (3) Native vendor connectors - the Microsoft Connector for Salesforce, the Power Platform connector for ServiceNow, the SAP gateway connector - are the right pattern when both vendors have invested in a supported, high-volume connection. (4) Custom APIs (Azure Functions, custom middleware, SPFx web parts that call external services) are the right pattern when the use case is bespoke or the data volume exceeds what Power Automate can sustain. Choosing the wrong pattern is the most common source of integration maintenance pain.
Salesforce
SharePoint-to-Salesforce is one of the most-requested US enterprise integrations. The most common pattern is: SharePoint as the content surface for Salesforce records, with documents living in SharePoint and surfaced inside Salesforce UI through the Microsoft Files Connect or third-party connectors. The reverse pattern - Salesforce records surfaced in SharePoint pages - typically uses Microsoft Graph for SharePoint and the Salesforce REST API on the other side, glued through Power Automate or Azure Functions. The integration almost always has an identity story (Entra ID on the Microsoft side, Salesforce identity on the other) and a permissions story (SharePoint permissions vs Salesforce sharing rules) that must be designed deliberately.
Microsoft Dynamics 365
Microsoft Dynamics 365 (CE for sales and service, F&O for finance and operations) integrates with SharePoint Online natively through Microsoft's built-in SharePoint integration for Dynamics, which surfaces SharePoint document libraries inside Dynamics records. Beyond the built-in pattern, Microsoft Graph and Power Platform expand the integration surface: Power Automate flows that move data between Dynamics tables and SharePoint lists, Power BI dashboards that combine Dynamics and SharePoint data, and Power Apps that read and write to both. The Microsoft-to-Microsoft integration is structurally simpler than Salesforce because the identity and permission models can share Entra ID.
Microsoft Teams
Microsoft Teams and SharePoint Online are now structurally connected: every Teams channel has a SharePoint Online site behind it, every channel file area is a SharePoint Online document library, and the Files tab in Teams is a SharePoint Online file experience. The practical integration question is not whether Teams and SharePoint connect (they do, natively, by default), but how to design the SharePoint Online information architecture so that Teams users and SharePoint Online users share a coherent experience instead of accidentally creating two parallel content sprawls. Loop components - a newer Microsoft 365 surface - are increasingly part of the Teams and SharePoint pattern as well.
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Power BI
Power BI integrates with SharePoint Online in three directions. (1) Power BI dashboards embedded in SharePoint pages, using the Power BI web part for SPFx-modern pages. (2) Power BI datasets that source from SharePoint lists and libraries through the Power Platform dataflow or direct connector. (3) Power BI reports that combine SharePoint content with other enterprise data sources (Dynamics, Salesforce, SQL, Snowflake, Synapse). The integration is usually low-friction because both products are Microsoft and share Entra ID; the design questions are about row-level security, refresh schedules, and dataset ownership.
Outlook
Outlook integrates with SharePoint Online through Microsoft Graph, Microsoft 365 group mailboxes, and the unified Microsoft 365 navigation. The most common integration patterns are: Outlook email attachments saved to SharePoint Online (manually or via Power Automate), SharePoint document libraries surfaced in Outlook for context, and Microsoft 365 group conversations that bridge Outlook, Teams, and SharePoint. The patterns are mature and rarely require custom development.
ServiceNow
ServiceNow integrates with SharePoint Online through three patterns. (1) ServiceNow native SharePoint integration for attaching SharePoint documents to ServiceNow incidents or requests. (2) Power Automate ServiceNow connectors for declarative workflows that move data between systems. (3) Custom integrations through ServiceNow REST APIs and Microsoft Graph for higher-volume or more complex use cases. The most common production pattern is a hybrid of (1) and (2): document attachments via native integration, workflow automation via Power Automate.
SAP
SAP integration with SharePoint Online is more often a content-and-process pattern than a real-time data pattern. Common patterns: SAP documents (POs, invoices, contracts) stored in SharePoint Online libraries with metadata for retrieval; SAP workflows that fire SharePoint approvals through Power Automate; Power BI dashboards that combine SAP and SharePoint data. The integration usually involves either SAP's OData services, the SAP connector in Power Platform, or an enterprise middleware layer (MuleSoft, Boomi, Azure Integration Services). Real-time SAP data in SharePoint pages is technically possible but usually a sign the use case should be revisited.
Workday
Workday integration with SharePoint Online is a common HR-driven request - employee profiles, org charts, onboarding documents, policy distribution. Workday exposes its data through Workday REST API and Workday Web Services; the Power Platform has Workday connectors; custom integrations use Azure Functions to bridge identity and authentication. The most common production pattern is a SharePoint Online HR portal that surfaces Workday data for self-service and stores HR documents with retention and access controls Workday does not natively provide.
DocuSign and Adobe Sign
Electronic signature integration is one of the simplest and highest-ROI SharePoint integrations. DocuSign and Adobe Sign both have Microsoft 365 integrations that allow documents in SharePoint Online to be sent for signature, signed, and returned to SharePoint with audit trail. Power Automate connectors extend the pattern with declarative workflows ("when a contract is uploaded to this library, send it to DocuSign and route the signed copy to the contracts library with metadata"). The integration is mature, the identity story is straightforward, and the maintenance cost is low.
Common Integration Failures
Integration failures fall into a small set of recognizable categories. Pattern mismatch: a use case that needs Microsoft Graph is built in Power Automate and fails at scale; a use case that needs Power Automate is built as a custom API and becomes unmaintainable. Identity mismatch: service accounts, app registrations, or OAuth flows that are not designed for production scale or break under conditional access. Permission mismatch: integrations that respect SharePoint permissions on the SharePoint side but bypass Salesforce sharing on the Salesforce side, or vice versa. Throttling: high-volume integrations that exceed Microsoft Graph or Power Platform throttling limits and fail silently. Monitoring gap: integrations that nobody owns until they break. Each is preventable; each appears in most integration post-mortems.
Security Considerations
Every SharePoint integration has a security and compliance surface that must be designed deliberately, not assumed. Identity: Entra ID app registrations with least-privilege scopes, conditional access where appropriate, no shared service-account passwords. Data: sensitivity labels carried across the integration where possible, DLP policies that span SharePoint and connected systems, encryption in transit and at rest. Audit: integration actions logged and traceable in Microsoft Purview where SharePoint is involved. Compliance: the integration design reviewed by the security and compliance function, especially for regulated industries. General guidance, not legal or compliance advice; consult counsel and your security function.
Frequently Asked Questions
What is the best SharePoint integration pattern for our system?
It depends on the system and the use case. Microsoft Graph for Microsoft-to-Microsoft, Power Automate for declarative low-volume workflows, native connectors for high-volume vendor integrations, custom APIs for bespoke logic. Most enterprises use all four across their portfolio.
Can we integrate SharePoint with a custom internal app?
Yes. The path is usually SPFx web parts or extensions on the SharePoint side, Microsoft Graph or SharePoint REST API for data, and an Entra ID app registration for identity. The pattern is mature and well-documented.
How does SharePoint integration handle permissions?
SharePoint permissions and the other system's permission model must be deliberately reconciled. The integration design has to say which side is authoritative for which decisions; assuming both will "just work" is the most common cause of permission incidents.
What about real-time SharePoint integration?
Real-time integration is possible through Microsoft Graph change notifications and webhooks, but most use cases that ask for real-time actually need near-real-time (under a minute) and are better served by a scheduled Power Automate flow or a Graph subscription.
Can SharePoint integrate with non-Microsoft cloud platforms?
Yes - AWS, Google Cloud, Snowflake, Databricks, and others have well-established patterns for integration with SharePoint Online through Microsoft Graph, Power Platform, or middleware. The integration usually lives in middleware rather than directly in SharePoint.
Are SharePoint integrations expensive to maintain?
It depends on the pattern. Native and Microsoft-to-Microsoft integrations are usually low-maintenance. Custom APIs require ongoing engineering investment. Power Automate flows need governance to avoid sprawl.
Who owns SharePoint integrations after they are built?
In healthy environments, the SharePoint team owns the SharePoint side, the connected system's team owns the other side, and an integration owner is named for each connection. Single-owner integrations almost always end up orphaned.
Conclusion
SharePoint Online integration with US enterprise tools is mature, well-documented, and supported by four reusable patterns - Microsoft Graph, Power Automate, native connectors, and custom APIs - that cover almost every use case. Salesforce, Microsoft Dynamics, Teams, Power BI, Outlook, ServiceNow, SAP, Workday, DocuSign, and Adobe Sign all have well-established patterns. The work is not in figuring out whether integration is possible; it is in choosing the right pattern, designing the identity and permission story, planning for throttling and monitoring, and aligning the security and compliance posture across both systems. Centric runs SharePoint integrations through its SharePoint migration & integration practice, as part of the broader Centric SharePoint consulting practice.
