Is a Cloud-Based Retail POS Enough to Guarantee 100% Business Availability?

Cloud retail POS systems have become the backbone of modern retail businesses, but is relying solely on cloud-based POS enough to ensure uninterrupted business operations? Looking at the last decades, many point-of-sales (POS) solutions have made the same journey as general enterprise IT. They’ve transformed from being closed, manually maintained systems running at each store, to being a centrally managed application in the cloud. The benefits of that transformation does not have to repeated here. However, free lunches are rare.

What is a Cloud-based Retail POS?

A cloud-based retail POS (Point of Sale) system is a software solution that enables retailers to process transactions, manage inventory, and track sales data using cloud technology. Unlike traditional on-premise POS systems, a cloud-based POS operates via the internet, allowing businesses to access sales reports, customer insights, and inventory updates from any device, anywhere. Only thin clients are needed in the store.

However, it relies on an active internet connection to function in-store.

Key Challenges of a 100% Cloud-based Retail POS

Some of the key challenges of a fully cloud-based POS include:

• Internet dependency required at all times
• Potential system-wide failures from cloud updates, that risk impacting all stores by a single central update.
• Risks of centralized data storage, single attack vector that impacts all stores with no way to recover locally.

Over the past five years cloud provider outages have become more frequent and severe. Outages are not only occurring more often, but they are also lasting longer. This increasing frequency and duration indicate a growing instability in cloud services, which can severely disrupt business operations and service availability. To add to the risks of cloud outages, the financial impact of the outages are also increasing.

From Cloud Outage Summary report by th4ts3curlty.com

The cost of downtime for large retailers can reach an estimated $5 million for a single hour. Another challenge with cloud only solutions is the requirement for low latency applications which are driven by more advanced systems like self check-out and shrinkage. These also include challenges with high bandwidth data like video streams that are better processed locally.

When looking at this graphic, included in IDC’s E-book “The Top 10 Retail areas to focus on in 2024”, it’s clear that unstable connectivity is one of the primary challenges retailers face around their in-store application operations.

Cloud outages will continue to happen, there are many reasons like power issues, human configuration errors or networking issues, as well as more recently risen threats such as nations in war actively cutting infrastructure.

A common software failure is the upgrade to a new software version with unforeseen side-effects. If that software version is running in the cloud, a failure will affect all your store locations.

Keep reading: Retailer’s Guide to Edge Computing

Why Retailers Are Moving Towards Hybrid and On-Premise Edge POS Solutions

The above challenges are why we see many retail enterprises moving towards an on-premise or hybrid model with a POS solution running partly in the cloud, but partly also on-premise, in the store. There are different flavours of the hybrid model:

• On-premise only for bigger stores. This is to reduce risk for major loss in the event of a single store failing, also avoiding infrastructure investments for all smaller store units.
• On-premise as a backup, when there is an outage the store switches over to an on-premise solutions.

Sometimes technology moves faster than knowledge. Many articles that I’ve come across around on-premise POS prefixes it with “legacy systems”, and often assumes local technicians. That is rarely the case anymore.

Hybrid POS – The Best of Both Worlds?

A hybrid POS solution combines a local instance of the POS application with a cloud-based counterpart. The on-prem component ensures low-latency transactions and uninterrupted operation, even during internet outages. In parallel, the cloud instance provides redundancy and can take over if local infrastructure fails.

Transactional data, pricing, and configuration are continuously synchronized between the edge and cloud, allowing seamless failover and consistency. Stores can dynamically switch between the local and cloud-based POS, ensuring high availability and operational resilience.

Comparing Cloud-based POS and Hybrid POS

💡 Meet edge computing: centrally managed on-premise applications

Cloud-Based POS vs. Edge Solutions: Which One Ensures Maximum Uptime?

Historically, on-premise POS systems have been vertical, boxed solutions from a single vendor that had to come on-site for installation, upgrades and trouble-shooting. Modern on-premise is spelled the edge, which implies that all the sites are managed as if the software were running in the cloud — fully automated and remote. Also, you can get the price down since the POS vendor will not sell you a box with their sticker on. You will run general compute in the store and the POS system is delivered (automatically) as standard software containers.

An on-premise edge Point-of-Sale (POS) system runs on local compute within the store’s network, operating fully offline without requiring constant internet connectivity. Data and transactions are periodically synchronized with central systems, ensuring consistency without real-time dependency. Software updates are handled per store using modern edge orchestration technologies—fully automated, validated locally, and isolated—so that issues in one store don’t impact others.

Data is kept at the edge wherever possible to enhance security and privacy, and all computation is performed locally to reduce latency and minimize data transfer. It is important that the on-prem POS solution is not based on vendor specific solution. Rather modern open edge computing architectures like Linux and software containers should be utilized so that the mix of in-store applications can be managed using an open edge platform.

In contrast, cloud-based POS systems introduce risks such as network dependency and centralized attack surfaces—where connectivity loss or a security breach can immediately disrupt all stores.
As a result, many retailers are shifting toward on-prem or hybrid POS architectures to ensure maximum availability, resilience, and control.

🔥 Watch out: the edge platform must support offline features

Having established a need for a central solution to deploy your POS solution at all store locations, let us head towards the next aha-moment. Fact is, many edge platforms only address requirements like low latency and data locality when it comes to the edge. Meaning, they let you deploy applications locally to provide faster response times in the store and keeping customer data within the building. Many of them, however, lack important features for offline capabilities, which are crucial when the site for some reason is disconnected from the cloud component. Such features include:

• On-premise healing, restarts and failover to other on-premise hosts must be fully autonomous without requiring the involvement of a central cloud component
• Application upgrades and modifications in the store must be possible when disconnected

The two above functions are rare to find in many “cloud-out solutions”, and when they are lacking, that’s usually a no-go for retailers. Your store location could be disconnected but you should still see an automatic fail-over of your POS system from one host to another in case of failure. You still need to be able to sell your products. Or, you might need to upgrade an application or change the configuration of an application while it is disconnected. And reconciliation should be managed when connected again.

Keep reading: Offline capabilities at the edge: 4 common design mistakes and how to overcome them

How Retailers Can Ensure Business Availability with an Edge POS Model

So, we have laid out the requirements for an in-store edge solution to guarantee business availability: centrally managed but with offline capabilities.

This foundation gets even more relevant when applying a platform approach to the digital retail store environment. The modern store has a whole range of new applications like automated checkouts, video surveillance systems to minimize theft and sweetheartning, and customized offerings to customers entering the store. These are all examples of data-driven applications with low-latency requirements which can not run in the central cloud. An edge platform outlined above is a key enabler making this happen. But again, take caution. Your store needs to be able to run well also when disconnected. You should never assume the central cloud to be availble, to stay competitive in a fast-paced evolving market.

Retailer Edge Litmus Test: POS Vendor Evaluation Checklist

• Retailers must assess whether their cloud based retail POS is resilient enough to handle outages, or if they need hybrid POS solutions with on-premise backup.”
• Non cloud based POS systems hold value for businesses needing complete control over transactions and data security.

Questions for Your Software Vendors:

• Do they provide standard software containers that run on general-purpose compute and can be managed by any open edge platform? Or are you locked into proprietary hardware or vendor-specific form factors?

Key Capabilities to Expect from Your In-Store Edge Platform:

• Centralized Application Deployment: Deploy applications automatically to thousands of stores from a single control plane.
• Safe, Transactional Rollouts: Ensure updates are transactional, with built-in support for canary deployments and automated rollbacks.
• Unified Monitoring: Get full visibility into the health and status of all applications across all stores via a central console.
• Self-Healing & Resilience: Automatically detect and recover from application or host failures at the edge—without manual intervention.
• Local Flexibility: Support for local overrides—adjust or reconfigure applications at individual stores when needed.
• Intelligent Reconciliation: When stores go offline and reconnect, changes between the store and central platform are automatically reconciled.

Don’t Forget to Test at Scale:

• Does your edge architecture hold up when deployed across hundreds or thousands of stores?
• Is performance, synchronization, and availability consistent at scale?

🎉 If the Answer Is Yes:
You’re ready to go—with maximized availability, flexibility, and control across your retail footprint.

👌 You are good to go with maximized business availability

While cloud based retail POS systems offer scalability and convenience, retailers must consider hybrid POS models to ensure business continuity. The right choice depends on factors like internet reliability, data security, and store size. Whether opting for a fully cloud-based system or a hybrid solution, ensuring seamless operations should be the top priority.

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