Stampli vs Ariba vs Concur for AP Automation

For a $120M multi-location services company processing financial data across two Sage Intacct entities, Stampli addresses the encryption requirement directly and completely. All data sent to or from Stampli is encrypted in transit using 256-bit TLS/SSL, and all application and API endpoints are TLS/SSL only with strong cipher suites enforced. Data at rest is encrypted using AES-256, and more sensitive fields such as bank account numbers and external system tokens receive an additional layer of AES-256 encryption with a separate private key. Stampli is hosted on AWS (eu-west-1) and undergoes SOC 1, 2, and 3 audits annually, with PCI DSS compliance (SAQ-D) also in place. The HIPAA help-center article further confirms that Stampli enforces TLS for all outbound notifications and that ePHI is protected through encryption, access controls, and monitoring, reinforcing that the encryption posture is platform-wide rather than limited to a single data type.

For a multi-location services company processing invoices and supplier documents through SAP Ariba, all data stored on the platform is protected using AES-256 encryption at rest, covering databases, file storage, and backups. Data in transit, including invoice documents, API calls between Ariba and connected systems such as Sage Intacct, and all Ariba Network cXML traffic, is secured via HTTPS with TLS 1.2 or higher enforced across every connection. The Security Guide documents that SAP Ariba supports TLS mutual authentication (both client and server present X.509 certificates) for web service integrations, and all inbound REST API requests are additionally protected by an API Gateway with OAuth 2.0. SAP manages encryption keys through a centralized Key Management Service, and customers can optionally bring their own encryption keys (BYOK) for additional control. This encryption posture is independently validated: SAP Ariba publishes a SOC 2 Type 2 audit report on an annual cycle, with the most recent report covering April 2024 through March 2025, attesting to Security, Availability, Processing Integrity, and Confidentiality trust principles.

For a $120M multi-location services company routing invoice data through Concur Invoice and into two Sage Intacct entities, SAP Concur applies encryption at both layers your security requirement calls for. At rest, SAP Concur uses AES-256 to encrypt data stored on devices and in the cloud. In transit, SAP Concur uses TLS and SSL protocols to encrypt data during transmission, ensuring that data exchanged between the application and SAP Concur's servers is protected from unauthorized interception. For flat-file ERP integrations (relevant to your Sage Intacct sync), all web traffic runs over HTTPS, and flat-file transfers use SFTP with files additionally encrypted via PGP. SAP Concur has also formally deprecated TLS 1.1, enforcing a minimum of TLS 1.2 across its platform. These controls are independently validated: SAP Concur has prepared a SOC 2 Type 2 audit report by an independent third-party accountant covering the period April 2024 to March 2025, under the trust principles of Security, Availability, and Confidentiality, and the in-scope products explicitly include Concur Standard/Professional/Premium Editions, covering Travel, Expense, and Invoice.

For a $120M multi-location services company running 55% PO-based invoices in Sage Intacct, Stampli's Automated PO Matching directly addresses the need to match service POs without a goods receipt. Stampli explicitly supports both 2-way and 3-way matching as configurable modes: 2-way matching compares the invoice against the PO (price, quantity, line-level details) without requiring a receipt record, which is the correct pattern for facilities, subcontractor, and professional services POs where no physical delivery event occurs. As Stampli's own guidance states, two-way matching is the appropriate method 'where there's nothing to receive: software, subscriptions, professional services billed against an SOW' (Stampli, 'What is the difference between 2-way, 3-way, and 4-way matching?'). The Automated PO Matching engine (powered by Billy) evaluates key PO and invoice data at the line level including item name, quantity, unit price, unbilled amounts, and department classifications, and flags discrepancies for review before processing (Stampli Help Center, 'FAQs and Overview of Automated PO Matching'). Three-way matching, which requires receiving to be enabled, is an additive opt-in; when receiving is not enabled, matching operates in 2-way mode against the PO alone. Configurable variance/tolerance thresholds and a skip-approvals rule (for Sage Intacct, confirmed in the skip-approvals help article) complete the pre-processing journey through stage 2 (PO match) without forcing a receipt confirmation step that has no real-world event behind it.

For a multi-location services company with roughly half its invoice volume tied to PO-based spend on subcontractors and facilities, SAP Ariba Invoice Management supports two-way PO-invoice matching as an explicitly documented capability within its invoice reconciliation module. Two-way matching between invoices and purchase orders allows the buyer to reconcile invoices for items that do not require a receipt. The mechanism operates at the individual PO line level: the site must be configured to map the ReceivingType extrinsic in the cXML OrderRequest document to the Purchase Order page; when a line item's ReceivingType is set to 4, it does not require a receipt and the invoice can be reconciled with two-way matching to the order only. Administrators can also apply this setting by commodity code: for some commodities, the organization may choose not to perform receiving at all, which results in a 2-way match instead of a 3-way match on invoice reconciliation. For service POs specifically, Ariba also supports a separate configuration path: if the customer has configured the SAP Ariba Procurement solutions to enable simplified procurement of services, service purchase orders can be invoiced directly without service sheets. This covers pre-processing stage 2 (PO match), deliberately bypassing stage 4 (receipt confirmation) for service line types where physical delivery verification is inapplicable. The system allows for setting up different levels of matching; customers have the option to choose between a 2-way or 3-way invoice match, where the 2-way match determines whether it is sufficient to match the invoice with the corresponding order without an additional receipt or approved service entry sheet.

For a multi-location services company with subcontractor and professional services POs that will never generate a goods receipt, Concur Invoice supports configurable two-way matching as a distinct rule group within its PO Matching module. The mechanism works in two layers: first, at the PO line level, each line carries a ReceiptType field set to either QUANTITY_RECEIPT (for goods requiring three-way match) or NONE (the default, meaning no receipt is required and the invoice is reconciled against the PO only). Second, administrators configure separate matching rule groups — one rule group for POs without receipts applies two-way matching logic, comparing invoice quantity, unit price, and total amount directly against the PO without waiting for a receipt confirmation step that would never arrive for service engagements. Concur's official learning documentation confirms that 'customers might have a mix of different matching needs and combine the two-way matching, receipt confirmation, and three-way matching' using multiple rule groups, with an explicit example of 'one for POs with receipts (three-way matching), one for POs without receipts (two-way matching).' Both individual (one-to-one, current invoice vs. PO) and life-to-date (cumulative invoice totals vs. PO, useful for blanket/standing service POs) rule types are available with configurable percentage or dollar-amount tolerance thresholds. When an invoice falls within tolerance, the system can auto-submit and auto-approve; exceptions outside tolerance are routed for resolution before payment. This covers pre-processing journey stage 2 (PO match) for service POs, intentionally bypassing stage 4 (receipt confirmation) by design.

For a multi-location services company moving off manual email-based AP and onto Sage Intacct automation, Stampli's standard implementation model bundles integration setup assistance into the base onboarding engagement, staffed by a dedicated Customer Success Manager (CSM) who owns the process from kickoff through go-live. The Sage Intacct connector is pre-built and requires no custom coding: Stampli's implementation guide states that buyers 'won't need to hire consultants or embark upon complex technical projects,' and the Sage Intacct integration page confirms that setup 'involves no custom coding — we simply configure the connection to mirror your existing entity structure, security settings, and custom fields.' The CSM role is explicitly defined as an implementation consultant who configures Stampli to the customer's ERP and workflow requirements, and Stampli's help center documentation directs customers who need configuration assistance to 'reach out to your Customer Success Manager' — not to a separate professional services team on a distinct SOW. For your 2-entity Sage Intacct environment, Stampli's Sage Intacct page explicitly states the platform supports 'classic parent/child entities, single-entity with multi-locations, or inter-company transfers,' and entity-level permissions sync automatically from Intacct as part of configuration.

Your requirement is for Sage Intacct integration setup to be handled by the vendor as part of the standard implementation engagement, with no separate SOW or additional cost. SAP Ariba's native integration tooling, the Cloud Integration Gateway (now called SAP Integration Suite Managed Gateway for Spend Management), is built specifically for SAP ERP and SAP S/4HANA backends. For a non-SAP ERP like Sage Intacct, SAP's own documentation explicitly states that CIG does not support non-standard and third-party integrations, meaning a Sage Intacct connection requires either custom middleware from a separately sourced third-party vendor (Mulesoft, Azure Integration, Boomi, or similar), custom development work, or a separately licensed SAP Integration Suite (BTP) engagement — all scoped as distinct professional services work. Third-party consultancies and integration vendors such as APIWORX have built their own Ariba-to-Sage Intacct connectors precisely because no native bundled connector exists within SAP Ariba's own implementation package. SAP Ariba's implementation model is itself a standalone professional services engagement, with implementation fees typically running 1–4x the annual license cost and scoped via a separate SOW — the integration setup labor for a non-SAP ERP like Sage Intacct is an additional, not included, workstream on top of that baseline.

For a $120M multi-location services company moving from fully manual AP to Sage Intacct-connected automation, SAP Concur offers a native Sage Intacct integration listed in its App Center. The connector handles bidirectional sync of GL accounts, vendors, and Sage Intacct dimensions, and supports posting invoices and expense reports into Sage Intacct automatically with near-real-time feedback. SAP Concur's App Center listing characterizes the connector as having 'Quick and easy setup' and 'No IT or third-party implementation required,' meaning a Concur admin can configure the connection without outside developers. However, 'no third-party required' is not the same as vendor-led setup assistance included in the contract price. SAP Concur's implementation model is built around separately scoped professional services: the onboarding resource center describes 'Managed Integration Services' as a distinct managed business service covering custom integration and automation, and independent commercial data consistently shows implementation and integration labor billed separately from subscription fees, typically adding 20 to 50 percent of first-year subscription cost. If the buyer wants guided assistance from SAP Concur's team to configure field mappings, dimension sync, and entity-level posting rules for their 2-entity Sage Intacct environment, that work is scoped and billed as a separate professional services engagement, not delivered as part of a standard bundled onboarding.