Transforming legacy and custom systems with composable commerce

7 min read
June 2, 2023

Introduction

In today's fast-paced digital landscape, businesses must adapt to remain competitive and meet evolving customer demands. Legacy and custom systems with tightly coupled components can hinder growth, innovation, and customer experience. Composable commerce platforms, like Nacelle, offer a solution for merchants seeking to break free from these constraints and embrace a more flexible, scalable tech stack. In this blog post, we will delve into the game plan for identifying tightly coupled components in your legacy systems and how composable commerce platforms can help with the decoupling process through various strangler patterns.

The detriments of tight couplings in business

Before diving into the game plan for identifying tightly coupled components, it's essential to understand why tight coupling is detrimental to the health of a business. Tight coupling in a tech stack can lead to several negative consequences that hinder growth, innovation, and the overall success of an organization:

1. Reduced flexibility and scalability: Tightly coupled systems make adapting to new business requirements or integrating with third-party tools and services challenging. This rigidity can prevent your business from scaling effectively and responding to changing market conditions, customer demands, or technological advancements.

2. Increased complexity and maintenance costs: When systems are tightly coupled, changes or updates to one component often require modifications to other connected components. This interdependency can increase complexity and maintenance costs as changes become more time-consuming and labor-intensive.

3. Inefficient resource allocation: With tightly coupled components, allocating resources effectively is complex, as you may need to invest in maintaining and updating multiple systems simultaneously. This inefficiency can lead to wasted resources, negatively impacting your business's bottom line.

4. Hindered innovation and slower time-to-market: The interdependence of tightly coupled systems can slow the development of new features, products, or services. As a result, your business may need help to innovate or bring new offerings to market quickly, potentially losing out to more agile competitors.

5. Lower quality customer experiences: When components are tightly coupled, creating seamless, personalized customer experiences across various channels, and touchpoints becomes more challenging. This limitation can lead to lower customer satisfaction and, ultimately, reduced loyalty and revenue.

6. Increased risk of system failures: Tightly coupled systems are more prone to cascading failures, as a single component's malfunction can negatively impact other connected members. This increased risk can lead to more frequent downtime, lost sales, and damage to your brand reputation.

The detriments of tight couplings in business


The first step in transforming your legacy custom system into a composable tech stack is identifying where components are tightly coupled. This process involves examining systems like the order management system (OMS), checkout system, promotion engine, content management system (CMS), product information management (PIM), and customer data platform (CDP). By understanding the extent of coupling between these components, you can develop a plan to incrementally decouple them using composable commerce platforms and the strangler pattern.

1. Order management system (OMS)

The OMS is responsible for processing and managing customer orders, inventory, and fulfillment. In many legacy systems, the OMS is tightly coupled to the checkout system, making it difficult to modify one without affecting the other. This coupling can result in inefficiencies and hinder your ability to adapt to new business requirements or integrate with third-party systems.

To identify areas of coupling in your OMS, consider the following:

- How are orders processed and managed across different channels and touchpoints?
- Are there any dependencies between the OMS and other systems, like the checkout or promotion engine?
- Can you quickly implement changes to your OMS without affecting other parts of your tech stack?

2. Checkout system

The checkout system is a critical component of your online store, as it manages the process of completing customer transactions. Tightly coupled checkout systems can limit your ability to customize the user experience or integrate with third-party payment gateways and fraud prevention tools.

Examine your checkout system to determine if it is tightly coupled by considering the following:

- How is the checkout process integrated with the OMS and promotion engine?
- Can you easily add or modify payment gateways and other third-party services?
- Is implementing changes to the checkout process challenging without affecting other systems?

3. Promotion engine

The promotion engine manages promotions, discounts, and special offers for your online store. In a legacy custom system, the promotion engine may be tightly coupled with the OMS and checkout system, limiting your ability to create targeted promotions or integrate with third-party marketing tools.

Assess the coupling of your promotion engine by asking these questions:

- How are promotions created, managed, and applied across different channels and touchpoints?
- Are there any dependencies between the promotion engine and other systems, like the OMS or checkout system?
- Can you easily modify promotions or integrate with third-party marketing tools without affecting other parts of your tech stack?

4. Content management system (CMS)

The CMS is responsible for managing and displaying content on your online store. In many legacy systems, the CMS is tightly coupled with front-end frameworks, making it difficult to update content or implement changes to the user interface without affecting other aspects of your tech stack.

To identify areas of coupling in your CMS, consider the following:

- How is content created, managed, and displayed across different channels and touchpoints?
- Are there any dependencies between the CMS and front-end frameworks or other systems?
- Can you easily update content or change the user interface without affecting other parts of your tech stack?

5. Product information management (PIM)

Product Information Management (PIM) is a crucial system for managing product data, including descriptions, images, and attributes. In legacy custom systems, PIM may be tightly coupled with other components, such as the CMS, OMS, or promotion engine. This coupling can make updating product information challenging or integrating with third-party tools for data enrichment, syndication, or translation.

To assess the level of coupling in your PIM system, consider the following:

- How is product data managed, updated, and shared across channels and touchpoints?
- Are there any dependencies between the PIM and other systems, like the CMS, OMS, or promotion engine?
- Can you easily modify product information or integrate with third-party data tools without affecting other parts of your tech stack?

6. Customer data platform (CDP)

The Customer Data Platform (CDP) collects, stores, and analyzes customer data to create a unified customer profile. In many legacy systems, the CDP is tightly coupled with other components, such as the CMS, PIM, or promotion engine. This coupling can hinder your ability to leverage customer data effectively for personalized experiences, targeted marketing campaigns, or advanced analytics.

Examine your CDP to determine if it is tightly coupled by considering the following:

- How is customer data collected, stored, and analyzed across channels and touchpoints?
- Are there any dependencies between the CDP and other systems, like the CMS, PIM, or promotion engine?
- Can you quickly access and leverage customer data for personalization or marketing initiatives without affecting other parts of your tech stack?

The Strangler Pattern

The strangler pattern is an approach to incrementally replace a legacy system by building new functionality alongside the existing system. As the new system gradually takes over the responsibilities of the old system, the legacy components are "strangled" or retired. This approach allows for a smoother, less risky transition to a more flexible and scalable composable tech stack.

Nacelle: A Complementary Solution for Your Legacy Stack

Nacelle is designed to work seamlessly with your legacy stack, despite the complexities in the underlying business logic. By initially using Nacelle as a supplemental solution, you can experience the benefits of a composable commerce platform without a complete overhaul of your existing system.

Unlocking the Benefits of Data Orchestration with Nacelle

Integrating a data orchestration system like Nacelle into your composable commerce journey offers several key advantages, including:

  1. Higher conversion rates: Nacelle's superior headless performance, combined with a distributed composable backend, enables faster page load times and a better shopping experience, ultimately driving higher conversion rates.
  2. Fast time to market: Nacelle's expertise in implementing the strangler pattern, focusing on content and commerce, allows for a more efficient and streamlined transition from your legacy custom system to a composable tech stack.
  3. Multi-head readiness: With Nacelle, you'll be prepared for multiple front-end frameworks or "heads" from day one, ensuring your online store can adapt to new technologies and user experiences as they emerge.
  4. Future-proof your business: Nacelle's consistently structured canonical commerce data model helps by providing a stable foundation for integrating new tools, technologies, and features as your business evolves.

Implementing the Strangler Pattern with Nacelle

To begin implementing the strangler pattern using Nacelle, follow these steps:

  1. Choose a starting point: Identify a specific area of your tech stack where coupling is causing significant challenges. The CMS, PIM, and Front End Framework are often good starting points because changing these components will help improve shopping conversion rates quickly. This will serve as your initial focus for decoupling and implementing Nacelle.
  2. Develop a roadmap: Create a detailed plan outlining the steps required to decouple the chosen system and integrate Nacelle. This plan should include timelines, milestones, and any potential risks or challenges that may arise during the transition.
  3. Build new functionality: Start developing the new functionality using Nacelle alongside your existing system. This may involve creating new APIs, microservices, or components that can communicate with your legacy system while taking advantage of the benefits provided by a composable commerce platform.
  4. Gradually replace legacy components: As the new functionality becomes more robust and reliable, gradually replace the legacy components in your tech stack. This may involve redirecting traffic from the old system to the new system or retiring outdated components as they are no longer needed.
  5. Monitor and optimize: Continuously monitor the performance and stability of the new system as you transition away from the legacy components. Adjust and optimize to ensure a seamless experience for your customers and internal teams.
  6. Expand to other systems: Once the initial transition is successful, apply the same strangler pattern approach to other tightly coupled systems in your tech stack, such as the PIM, CDP, or checkout system. This will enable you to gradually transition your tech stack to a composable commerce platform.

Following the game plan outlined in this comprehensive guide, you can transform your legacy custom systems into a flexible and scalable composable tech stack. With its expertise in the strangler pattern and data orchestration, Nacelle's composable commerce platform provides the support you need to make this vision a reality. As you embark on this journey, remember that the future belongs to those who dare to think differently and seize the opportunities offered by the rapidly evolving world of digital commerce.

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