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Legacy Point of Sales

Legacy Point-of-Sale, or POS systems have worked well for the 10-20 years, but as the business and technology keep evolving, they can’t satisfy modern demands in the best way. Today, POS systems need maintenance cost efficiency, modern and customizable UI/UX experience, mobility. Legacy POS systems will hold your business development or even move it back with large ongoing maintenance costs and lack of modern user experience.

Abto Software will help you throughout all of the steps of Legacy POS modernization: from a deep product & technology discovery at the beginning to automatic testing/deployment and documentation/maintenance/training services.

Abto Software is a value add technology solution provider and a trusted POS and ERP reengineering partner for many companies, launched in 2007. From initial consulting to implementation, our broad capabilities are built around the business applications you count on. We have over 200 clients globally and 16 years of business-domain expertise in retail, internet, government, healthcare and life sciences, public sector, manufacturing, other service industries.

How to Approach Legacy POS Re-engineering

When the companies start considering the reengineering of their legacy POS systems and how to bring them into the new digital era, they initially think that their development partner will suggest either “starting from scratch” or they will have to “rip and replace” their desktop POS software. However, we believe that in many cases legacy Point of Sales is still perfectly viable and simply requires digital enhancements.

To strike the right balance, Abto’s team believes more often than not bringing legacy POS systems into digital-ready mode is an iterative process. Although there is no one-size-fits-all solution, the key is creating flexibility to add new digital layers which get rid of current technology obstacles and support long term growth.

Our approach

Every approach to modernization —a complete platform migration, adding new capabilities to existing legacy systems, or migrating from a legacy mainframe to more modern language and runtime environments—involves costly pitfalls to avoid. This is why we believe that any enterprise application modernization is first and foremost about helping organizations accelerate their digital agenda while extending the useful life of their systems.

An important first step is to understand your long term product business goals and the major constraints of the legacy software.
It’s critical to evaluate which software parts have the biggest impact on growth and strategy, and measure their limitations.

Next, we analyze the POS modernization options. There are modernization approaches to fit each application’s needs, which is after getting to understand the customer business, we often follow with a careful consideration of the latest modernization approaches, and how we can transform your legacy POS software to comply with the long term business goals in the most efficient way.

The final step is to develop and agree a modernization plan, incorporating both business and IT objectives, to transform traditional POS applications. The crucial elements of this plan are:

  • Reuse the existing code/business logic as much as possible
  • A complete backend and front end separation
  • Efficient automatic testing
  • A clean separation of business objects
  • Introduction of API to be used by authorized 3rd parties

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We help transforming legacy POS software into modern enterprise-level scalable and secure POS solutions that users can use on desktop, web, smartphones, tablets; with intuitive modern interface you can learn without extensive trainings.


Since the main technical idea was to provide a suite of independent microservices that could transform any current POS system the retailer is using into an omnichannel Point-of-Sale, there were a few challenges that our developers had to resolve:

  • 3rd party integration
    The integration with the client’s POS software, or any other ecommerce platform
  • High scalability
  • Complete Independency
    Independent ecommerce microservices that could be switched on and off without disrupting the operating POS.


The advantages of having microservices for omnichannel POS, following domain-driven design include:

  • A complete microservice independency (during the development and lifetime processes).
  • Different programming languages can be used to write different services (the maximum code reuse as a result).
  • Fault isolation (a fail of one microservices will not cause fails of other services).
  • An easy deployment, scale and integration with third-party services.

Tools and technologies:

  • .Net Core 2.0, Angular 5, Azure Service Fabric, DDD, EDA, HATEOAS, JSON API.


Other features of restaurant Point of Sale software

  • Full Inventory management
    Change item details like price, name, or quantity in real time. Track stock quantities and get email alerts when items run low.
  • Customizable floorplan
    Create a table layout and make sure changes are added to POS system so your staff always know where to go and the customers never wait too long.
  • Reporting Engine for printing check and orders
    Help the kitchen deliver the goods in less time with printing out orders as soon as as they are sent.
  • Integration with Hotel management software
    With restaurant iPad POS, your staff can manage food and beverage orders anywhere around the hotel and charge guests directly to their hotel room.

Tools and technologies:

  • .Net, Asp.Net MVC, JavaScript.


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