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Planning your ERP deployment

Your next big decision when considering a new ERP system? How it will be deployed. There are several approaches to choose from, including traditional on-premise, cloud deployment, or a hybrid combination of both. You will want to consider financial differences and look at each ERP deployment strategy’s strengths and attractions, as well as any unique limitations or challenges.


Before you start considering ERP deployment options, see how – and why – the cloud has become a vital environment for business success in the digital economy.

Why all the interest in cloud deployment?

We all watch with keen interest as computer technology continues to evolve at an ever-increasing pace. The earliest business systems and the first ERP systems were hosted on large mainframe and mid-range computers with “dumb” terminals for user input – after they’d replaced punch cards and key-to-disk input, that is! The next “state-of-the-art” technology was client/server architecture wherein the dumb terminals were replaced by PCs (now called clients) that could handle a portion of the workload. This reduced the amount of data that had to be shuttled back and forth with the server computer.


Around the millennium, two significant developments changed the world of computing and ERP: the Internet and the cloud. No longer was it necessary to buy and support hardware and software to run your business. All or major pieces of the technology could now be “rented” or outsourced in a bundle that included all maintenance and much of the technical operations. The ubiquitous Internet provided the communications infrastructure needed to make the cloud practical and available anywhere in the world.


But businesses did not immediately migrate their ERP systems to a cloud deployment. It took some time for the technology and applications to mature – and for companies to realize that the computer does not have to be on-site in order to get reliable access and security for business-critical applications. Part of that evolution involved developers learning how to:


  • Take full advantage of cloud deployment
  • Write or re-write applications appropriately
  • Rebuild their infrastructure – both technology and human resources – to support cloud-based systems


And, importantly, now cloud ERP systems deliver advanced technologies like artificial intelligence (AI) and machine learning to enhance productivity and service; tailored user experiences to drive adoption; and wide-ranging functionality and embedded analytics to provide a complete view of the business – ultimately supporting business innovation and growth.

The SaaS pricing model

In the past, most software was installed on company premises and the only licensing option was to purchase a perpetual license – where the application is licensed for an upfront amount plus a yearly maintenance contract for upgrades and bug fixes. Software licenses are most often priced on a per-user basis. Annual maintenance is commonly charged at 18% to 20% of the then current software list price. This means that the software license is essentially “repurchased” every five to six years.


With on-premise ERP, all the hardware and software is purchased or leased and installed at a company’s location(s). The company is responsible for maintenance, support, and possible upgrades or expansion of the hardware, systems, and application software – as well as the facility space, utilities, insurance, failover resources, and off-site backup storage.


Cloud-based ERP systems, on the other hand, are not typically installed on-site and are supported by the supplier as part of a monthly or annual fee. They are licensed on what is called a software-as-a-service (SaaS) basis. SaaS licenses can be priced per user, per application, or per application set (all of ERP, for example), based on the size of your company or other variations.


An interesting aspect of cloud deployment licensing is its scalability. If licensed by the user “seat,” you can add or decrease users and pay a higher or lower price thereafter based on the new user count. If your transaction volume, storage capacity, or computing power requirements change, the supplier is responsible for upgrading its facilities to accommodate the change, which means you won’t have to buy and install more servers or more disk storage.


The closest analogy might be cable TV. You pay for what you require, and that price includes use and operation of all the physical facilities, personnel, maintenance, and any other expenses related to the cable service at your location. If you need and add more channels, you will just pay for what you requested and not worry about how they manage to provide the additional channels.

ERP deployment options

There are several possible ways to implement an ERP system:

ERP deployment options

Types of ERP deployment

1. Cloud ERP also known as SaaS ERP


In cloud ERP, the primary licensing model is software-as-a-service (SaaS). The system provider will have its own data center – or may lease space on a public cloud to host its applications and systems. All hardware, systems, and support services are provided through the Internet. This makes implementation quicker and easier for the user company because, with all the hardware and software pieces already in place, they can start right in on the data transfer and user training.


With this cloud ERP deployment option, your software provider will also take care of all the installation, maintenance, and support – including any and all software updates and upgrades such as adding computing power or storage. As well, systems, applications, and resources can “autoscaled,” or increased or decreased automatically to meet changing, short-term needs. This eliminates having to pay for computing resources that may sit unused most of the time as is the case with on-premise ERP systems.


Cloud-based SaaS ERP has little or no upfront cost (a “capital expense”) but has a somewhat higher monthly cost (an “operating expense”), compared with a typical on-premise installation. When viewed over the normal lifecycle cost period of five to seven years, total cost of ownership (TCO) is similar to, if not less than, an on-premise installation and offers potentially better service, support, and security.


Cloud ERP also offers the fastest path to innovation, making it ideal for businesses that want to aggressively pursue their digital transformation strategy. This deployment option allows companies to easily reimagine, optimize, and adapt their business processes as needed – and to take advantage of standardized best practices which modern ERP vendors should support.



2. On-premise ERP systems


On-premise is how most companies historically deployed their ERP systems. In this deployment model, ERP software is installed in your data center at the locations of your choice. The installation and maintenance of the hardware and software is your staff’s responsibility.


Today businesses are embracing the cloud for its flexibility, ability to scale, and ease of innovation. Though still, for some companies, especially those in highly controlled industries, on-premise is a preferable approach due to legal, regulatory, or organizational constraints.



3. Hybrid ERP systems


Elements of a cloud and on-prem ERP deployment can be combined to create a hybrid cloud, which provides the flexibility to choose the optimal deployment for each application. Hybrid cloud ERP can be used as a stepping stone to the cloud, or to satisfy industry regulatory issues and special security requirements that may dictate the need for on-prem applications in certain situations. There may also be other restrictions or preferences that make on-prem desirable for certain applications. The complexity of a business and its current environment as well as desiring a slower speed of change factor into the decision to deploy in a hybrid scenario. 


A hybrid implementation allows applications and data to move between the options based on workload changes. It delivers cloud benefits from that part of the system that is on the cloud. However, it requires more local IT involvement to support the on-prem pieces, as well as the coordination between the two – or more – ERP system environments.



4. Two-Tier ERP


Really a variation of the hybrid approach implemented for the same reasons, two-tier ERP deployment – sometimes called hub-and-spoke deployment – employs a central system with smaller satellite systems supporting remote facilities. Think of corporate ERP as the hub, with individual ERP systems at subsidiary plants, warehouses, or offices all feeding data back to the hub. This is not a new idea; it emerged during the 1990s’ distributed processing phase, with companies choosing to implement smaller, simpler, and less costly systems at remote locations while maintaining the larger, more capable, corporate system at company headquarters. Any or all of the systems in a two-tier network can be on-prem or cloud-based, purchased or SaaS-licensed.


The overall cost for a two-tier ERP deployment – with less costly systems at the nodes instead of the same corporate system everywhere – will yield a lower cost for the initial purchase. However, integration and support can result in a higher overall, continuing cost because the interfaces must be built and maintained. And, year after year, it will take more IT support to coordinate with multiple suppliers, as well as manage uncoordinated upgrade schedules and interface changes.


Planning your ERP project

Start your planning off with these ERP implementation best practices.

Tips for the selection process

Choose your software first through a careful ERP evaluation process, then consider the deployment options based on the software’s deployment capabilities and your company’s needs and potential ERP return on investment. Some ERP software is cloud or SaaS only, while other vendors offer cloud, on-prem, and hybrid. Deployment options available may be a criterion for inclusion on the short list, but they should not be the sole determinant for system selection.


Fast growing companies and those that expect upcoming changes in the number of users (either up or down) should probably focus on cloud ERP systems for their scalability and pay-for-what-you-use pricing. Also, be sure all the members of the selection team understand the features and benefits of the different ERP deployment options.


Companies may initially be drawn to cloud ERP deployment for financial reasons – like little or no capital outlay and reduced total lifecycle cost – but are excited by the technical and operational advantages the cloud has to offer, including:

  • ERP that is always up to date with the latest upgrades (at no extra cost or effort)
  • Virtually unlimited scalability
  • Pay-only-for-what-you-need/use basis
  • Faster implementation
  • Better security and access controls, and more

And, full cloud deployment is not the only option. Sometimes it makes more sense to keep some of the applications on premise and use the cloud for the rest. Fortunately, a variety of configuration and deployment choices are available so you can choose the deployment that makes the most sense financially and operationally.


Moving to a new ERP system is a significant change for system users, IT, and the entire organization. It makes sense to explore all options and choose the system configuration that offers the best performance at the best cost. Then, plan for how your internal resources and structure will have to change to get the most from your investment, no matter the configuration and deployment. 


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