Most finance teams know accounts payable needs to change. The manual invoice workflow that worked when you were processing 500 invoices a month becomes a real problem at 5,000. Paper, email threads, and spreadsheets don’t scale. Approvals slip. Errors multiply. And the AP team spends most of its time doing work that a well-configured system could handle automatically.
Cloud-based AP automation is the most common solution finance teams reach for when they get serious about fixing this. But “cloud-based” covers a lot of ground, and not every platform will fit your organization, your ERP environment, or your team’s actual way of working.
This guide covers what cloud-based AP automation actually is, what it does well, where it has genuine trade-offs, and what to look for when you’re evaluating options.
What cloud-based AP automation means in practice
Cloud-based accounts payable automation runs invoice-to-pay workflows on infrastructure that your vendor manages and hosts remotely. You access the platform through a browser or application interface. The vendor handles uptime, security updates, and infrastructure maintenance. Your team focuses on processing invoices, managing exceptions, and reviewing payment runs.
This is different from traditional on-premises AP software, which runs on servers your IT team maintains, requires your own resources for updates and security patches, and often needs significant internal expertise to keep running well.
The more important distinction, though, is what the software actually does rather than where it runs. Modern cloud AP platforms automate the steps that used to require manual work: capturing invoice data from PDFs and other formats, validating that data against your supplier records and purchase orders, routing invoices for approval through configured workflows, and posting approved invoices to your ERP for payment. The goal is to get as many invoices as possible through the process without anyone on your team needing to touch them.
How cloud AP actually works
When an invoice arrives, a cloud AP system captures the relevant data using intelligent document processing. This has largely replaced older optical character recognition (OCR) technology; it handles structured and unstructured documents more accurately, and it learns from corrections over time.
Once captured, the system validates the invoice against your master data: does this supplier exist? Are the payment terms consistent with what you’ve agreed? Does the line-item detail match a purchase order? If everything checks out and there’s a corresponding purchase order and goods receipt, the invoice can move straight through to payment without human review. This is what AP teams mean when they talk about touchless processing.
When something doesn’t match, the system routes the invoice for exception handling. Rather than landing in a general inbox, exceptions go to the right person based on rules you’ve configured: by supplier, amount, cost center, or any other criteria that fits your approval structure.
The AP transformation guide on Serrala’s blog goes deeper on how this progression works across the full invoice lifecycle, from ingestion through payment reconciliation.
Cloud AP – Benefits that are real, and a few that depend on your situation
Cloud AP platforms consistently deliver in a few areas. Real-time visibility into where invoices are in the process is one of them. When every invoice runs through a centralized platform, you can see exactly what’s pending, what’s approved, and what’s overdue, without chasing status updates by email. For finance teams managing approvals across multiple locations or business units, this alone changes how the AP function operates.
Processing speed is another reliable gain. Automated capture and matching removes the manual steps that create delays, particularly at the start and end of the cycle. Invoices that used to take days to post can move through in hours when the process is well-configured.
Cost reduction is real too, but the numbers vary more than vendor marketing tends to suggest. Organizations with high invoice volumes and heavily manual processes see the largest improvements. Teams already running semi-automated workflows see more modest gains. Honest vendors will ask about your current process before quoting you percentage improvements. Serrala’s blog on why cloud-based AP solutions deliver a competitive edge goes deeper on the ROI and security dimensions if those are your primary concerns.
Remote access matters more than it used to. Approvals that once required being at a specific desk or in a specific office can happen from anywhere, which helps distributed finance teams and shared service centers maintain consistent throughput.
Security is something cloud platforms handle differently than on-premises systems, not necessarily better, but differently. The vendor is responsible for encryption, access controls, and audit logging. For many organizations, a mature SaaS provider with dedicated security infrastructure offers stronger protections than what their internal IT team can realistically maintain.
Cloud deployment versus on-premises: the real differences
The cloud versus on-premises comparison comes up in almost every evaluation conversation. Here’s what actually matters.
On-premises AP systems give your IT team direct control over data location and access. For organizations with strict data residency requirements or complex internal security policies, this matters. The trade-off is that your team bears the cost and responsibility of maintaining the infrastructure, applying updates, and managing integrations with other systems.
Cloud platforms shift that responsibility to the vendor, which reduces internal IT burden and usually means faster access to new features. Updates roll out automatically rather than requiring internal deployment projects. The flip side is that you’re dependent on the vendor’s decisions about where data is stored and how security is managed.
Hybrid deployments, where some processes run in a private cloud environment and others use public cloud infrastructure, are increasingly common for organizations with specific compliance requirements.
The right answer depends on your organization’s existing infrastructure, your IT team’s capacity, and how much control you need over specific data and processes. There’s no universal correct choice.
What to look for when you’re evaluating platforms
ERP integration depth
This is where evaluations often go wrong. Most platforms claim ERP integration. What varies enormously is how that integration actually works. File-based transfers that push data between systems periodically are very different from native connectors that read and write directly to your ERP in real time. Ask vendors specifically about the integration method, not just whether integration exists.
Invoice capture accuracy
The practical value of an AP platform depends heavily on how well it handles your actual invoice mix. If you receive many non-standard invoices, PDFs with unusual layouts, or invoices in multiple languages, test the capture capability against your real documents rather than the vendor’s demo set.
Exception handling workflows
Straight-through processing rates get a lot of attention, but most organizations have a meaningful percentage of invoices that require human review. How exceptions are identified, routed, and resolved often determines whether automation actually reduces AP team workload or just shifts it.
Scalability for your growth path
Cloud platforms generally scale more easily than on-premises systems, but the practical limits vary. If you’re planning significant growth in invoice volume or geographic expansion, ask specifically about how the platform performs at larger scales, and get references from customers at similar volumes.
Total cost of ownership
Subscription fees are the visible cost. Implementation, integration work, ongoing configuration, and training are the less visible ones. Get a complete picture of what you’ll spend in the first two years, not just the annual license cost.
The guide to choosing the right AP software for your business size on Serrala’s blog covers these criteria in more detail across different organization sizes and maturity levels.
Cloud AP and ERP integration: the details that matter
Cloud AP platforms work differently depending on which ERP you run, and the integration quality matters more than most procurement processes give it credit for.
For organizations running SAP, the integration question splits into two paths. Companies on SAP S/4HANA Private Cloud or on-premises deployments can choose between SAP-embedded solutions (which run natively inside the SAP environment) and cloud-native AP platforms that connect to SAP via API. Both can work well, but they have different operational profiles and different total costs.
For companies on SAP S/4HANA Public Cloud (GROW with SAP), integration options are more constrained by what SAP’s public cloud environment supports. Pre-built, certified connectors that work within the public cloud architecture are meaningfully different from custom integrations that may require ongoing maintenance.
Microsoft Dynamics 365 Business Central users face a similar question. Platforms that offer genuine API integration with Business Central, and have documented deployments in that environment, are different from platforms that offer generic ERP connectivity.
These details matter because integration complexity has a direct effect on implementation timelines and ongoing maintenance costs. The blog post on integrated financial automation covers how this plays out when AP needs to connect to broader payment and treasury workflows.
How Serrala approaches cloud AP
Serrala’s cloud-native AP solution handles the invoice lifecycle from capture through payment, with AI-powered workflows across capture, validation, matching, and approval routing.
For organizations on SAP, Serrala offers pre-built connectors for both SAP S/4HANA Public Cloud and SAP ECC, including SAP-certified integration with GROW for public cloud deployments. For Microsoft environments, Serrala’s solution is available on the Microsoft Commercial Marketplace and includes seamless API integration with Microsoft Dynamics 365 Business Central, meaning the connection works within the tools your team already uses, including Microsoft Teams for invoice approvals.
Serrala also deploys in an SAP-embedded configuration through its embedded finance suite for organizations that prefer to keep AP automation natively within the SAP environment rather than connecting a separate cloud platform.
This flexibility across deployment architectures means organizations don’t have to choose between ERP compatibility and cloud delivery. The customer success story on S/4HANA public cloud integration gives a concrete picture of what this looks like in a multi-entity, multi-jurisdiction deployment.
If you’re mapping out what cloud AP could look like for your organization, Serrala’s AP automation overview is a reasonable starting point.
Frequently asked questions
What is cloud-based accounts payable?
Cloud-based accounts payable is an approach to AP automation where the software runs on infrastructure managed by a third-party vendor and is accessed via a browser or application interface. It handles invoice capture, validation, approval routing, and payment processing without requiring on-premises software installation or internal IT infrastructure to maintain.
How is cloud AP different from on-premises AP software?
On-premises AP software runs on your own servers and is managed by your IT team. Cloud AP platforms run on vendor-managed infrastructure, which shifts the responsibility for maintenance, security updates, and system availability to the vendor. Cloud deployments typically offer faster access to new features and lower internal IT burden, while on-premises gives organizations more direct control over data location and access.
What does “touchless processing” mean in accounts payable?
Touchless processing refers to invoices that move from receipt through to payment approval without requiring any manual intervention from your AP team. When an invoice arrives, the system captures the data, validates it against master data and purchase orders, and posts it automatically if everything matches. The percentage of invoices that achieve touchless processing depends on your supplier data quality and workflow configuration.
How does cloud AP integrate with SAP?
Integration depth varies significantly by vendor. Some platforms use file-based transfers that periodically sync data between systems. Others use real-time API connections that read and write directly to SAP. For SAP S/4HANA Public Cloud specifically, pre-built certified connectors are important because the public cloud environment has constraints on custom integrations. Serrala holds SAP certification for GROW with SAP (S/4HANA Public Cloud) and offers pre-built connectors for both S/4HANA Public Cloud and SAP ECC.
Can cloud AP work with Microsoft Dynamics 365 Business Central?
Yes. Platforms with native API integration with Business Central can connect AP workflows directly to Dynamics data, including supplier master records, purchase orders, and payment processing. Serrala Alevate AP is available through the Microsoft Commercial Marketplace and includes pre-built API integration with Microsoft Dynamics 365 Business Central.
What are the most common implementation challenges with cloud AP?
The most frequent issues involve data quality and ERP integration. Supplier master data that hasn’t been cleaned in years creates validation problems when automation tries to match invoices. Integration complexity is often underestimated, particularly for organizations with multiple ERP instances or non-standard configurations. Organizations that do well typically define clear success metrics before implementation, clean their master data first, and pilot with a specific invoice category or entity before a full rollout.
Is cloud AP only suitable for large enterprises?
No. Cloud-based AP works across organization sizes, though the priority features differ. Smaller organizations typically benefit most from faster deployment and lower upfront cost. Larger organizations with high invoice volumes and global operations benefit more from advanced automation rates, multi-entity support, and integration with complex ERP environments. The right platform depends more on your invoice complexity and ERP environment than on headcount.
What is the typical cost structure for cloud AP software?
Most cloud AP platforms use subscription pricing based on some combination of invoice volume, user count, and enabled modules. Implementation costs, integration work, and training are typically separate. The total first-year investment is often higher than the subscription fee alone suggests, so it’s worth requesting a complete cost breakdown that includes implementation and integration before comparing vendors.
