Magento upgrade: Key points to stay up-to-date with minimum cost

Upgrading Magento isn’t just about installing the latest version; it’s about keeping your store secure, stable, and ready for growth. Each Magento upgrade, however, can introduce unexpected costs, delays, and technical hurdles that disrupt business momentum.

In this article, we explain what a Magento upgrade is, how to determine when your store needs one, and how to plan and execute the process effectively. We also introduce a sustainable solution to keeping your Magento store up to date while controlling costs and ensuring long-term stability.

A Magento upgrade is the process of updating your store’s core software, modules, and hosting environment to match the requirements of a newer Magento version. It is a complex process that requires technical expertise, as every change can create new dependencies or conflicts that must be carefully managed to ensure the store continues to run reliably. 

Typical tasks include:

1. Environment and system alignment: Every Magento upgrade must run on a compatible technical foundation. This means the underlying systems that power your store, including the hosting setup, database, and supporting software such as PHP, must meet the requirements of the newer version. If any of these components are outdated, they need to be updated or reconfigured first to ensure the upgrade runs smoothly and the site remains stable.

2. Core application and module compatibility: Magento upgrades update the core system that your store runs on, which can affect both built-in functions and any additional modules you use. Some of these may rely on older logic that is no longer supported, so they need to be reviewed and adjusted to stay compatible. Because this process often involves detailed testing and code adjustments, it can be time-consuming. If not done thoroughly, some modules may remain only partly compatible, leaving behind inconsistencies that reduce efficiency and build up technical debt over time.

3. Storefront and theme updates: Themes built on the older Luma framework rely on technologies such as KnockoutJS and RequireJS, which Magento is gradually phasing out. As newer versions introduce changes to templates, layouts, and rendering methods, these themes often require code adjustments and stylesheet updates to remain compatible. Because even small structural differences can break page rendering or affect site performance, this stage demands careful frontend development and testing to ensure a stable, consistent storefront after the upgrade.

4. Integration and data connections: Magento upgrades often involve changes to how it communicates with connected systems such as ERPs, CRMs, PIMs, and payment gateways. Each upgrade can alter API endpoints, authentication methods, or data formats. Without revalidation, these changes can disrupt order, inventory, or customer data synchronisation, creating costly operational issues that affect fulfilment and customer experience.

5. Testing and quality assurance: Magento’s layered caching and indexing mean that even small code differences can create hidden bugs that appear only under load. Comprehensive QA ensures that upgraded features work correctly and that no critical workflows, such as checkout or stock updates, are affected.

Magento releases three main types of upgrades. Each serves a distinct purpose in maintaining your store's security, stability, and compatibility with Adobe’s evolving architecture. None of these are optional if you want to maintain a healthy and sustainable Magento environment.

Expert insights: Not every minor Magento upgrade is simple. Some releases include architectural changes that affect dependencies, integrations, and compatibility. For example, the 2.4.2 to 2.4.3 release introduced new system requirements such as Composer 2, which manages Magento’s core code and modules, along with updated search and payment technologies. These updates modified Magento’s underlying framework, making the upgrade more complex than typical minor releases and requiring thorough preparation, testing, and validation to ensure stability and avoid disruption.

Each upgrade type carries different levels of complexity, but all are important to long-term stability. Major Magento releases introduce deep architectural improvements and new features that keep your store secure, compatible, and ready for future growth. Minor versions and security patches should also be applied regularly to maintain performance and reduce long-term upgrade effort. The next section explains how to determine when an upgrade becomes essential for your store.

What if frequent upgrades strain your budget?

Magento upgrades can seem costly and time-consuming, but they do not have to be.

On Tap’s Evergreen solution includes free lifetime upgrades after your first project, covering all future minor and security releases. Once your store is fully optimised and aligned with Adobe’s best practices, we handle every upgrade proactively with each official Magento release. This approach keeps your site continuously up to date while delivering predictable total cost of ownership and long-term savings.

Staying current is essential for protecting the long-term stability, security, and performance of your store. Each release from Adobe brings essential updates, including security patches, PHP compatibility, and new integration support. Ignoring these updates can leave your store vulnerable, unstable, and more expensive to maintain in the long run.

However, not every business needs to upgrade Magento store immediately after each release. The right timing depends on the health of your current site and the internal resources you have for managing upgrades safely.

The framework below helps you determine whether you can wait or need to act now, and also outlines a separate path for stores with foundations that are no longer stable enough to support safe upgrades.

If your Magento version is still within Adobe’s official support window and your technology stack remains stable, you can safely defer an upgrade for a short period. However, deferral should always be intentional and time-bound. Each skipped release gradually widens the architectural gap, introducing deprecated code, outdated libraries, and configuration inconsistencies that make the next upgrade slower and more costly. The longer you wait, the more effort and risk compound.

To stay in control, treat the time between releases as preparation. Plan the next upgrade around Adobe’s release schedule, allowing time for testing, compatibility checks, and dependency updates. This proactive approach ensures that even if you defer, you remain ready and avoid last-minute rebuilds, unstable deployments, or unexpected costs.

There comes a point when deferring is no longer an option. If your Magento version is approaching the end of Adobe’s support window or your store has started showing signs of instability, it is time to prioritise an upgrade. Acting early prevents the situation from escalating into security risks, broken integrations, and higher long-term costs.

1 - Version gaps

If you already know which Magento version your store is running, these signs indicate that your current setup may already be drifting from the latest supported standards:

• Your Magento or PHP version is at the end of support: Each Magento version is supported by Adobe for a limited time. When that support period ends, Adobe discontinues all security patches, bug fixes, and performance updates. Over time, this leaves your store exposed to unresolved vulnerabilities and gradually incompatible with newer technologies and modules.

• Your store has fallen several releases behind the current versions: Even if your version is still technically supported, large version gaps introduce architectural drift: Outdated libraries, deprecated APIs, and module conflicts that make maintenance increasingly difficult and the future upgrade significantly more costly.

2 - Operational and business symptoms

If you haven’t checked your version yet but are experiencing problems, these symptoms may indicate that your store is running on outdated architecture:

• Noticeable performance or reliability issues: Slow page loads, unstable indexing, or checkout errors often signal that your underlying architecture and dependencies are no longer optimised for current standards.

• Extensions or integrations fail to work properly: Payment gateways, shipping systems, or marketing tools may stop syncing correctly when your Magento version no longer supports their latest APIs.

• Security or compliance warnings: Frequent vulnerability alerts or PCI/GDPR compliance issues indicate that your version’s protection layer is outdated and can no longer be patched effectively.

Sometimes, upgrading is not an effective solution. If your store relies on heavy customisation or runs on legacy code that conflicts with Magento’s modern framework, even a successful upgrade may not restore long-term stability.

In such cases, rebuilding the store on the latest Magento version is often the more effective approach, particularly when moving from Magento 1 to Magento 2. It allows you to re-establish a clean, standards-aligned codebase instead of constantly patching legacy logic. In the short term, this approach is typically faster and more predictable than attempting a complex upgrade followed by module refactoring. In the long term, it delivers a stable foundation that performs better, is easier to maintain, and keeps future upgrades low-risk and cost-efficient.

Carbon is built specifically for this purpose. It is a rapid-deployment system for Magento and Adobe Commerce that helps merchants rebuild on a high-performance, Hyvä-based framework while retaining full flexibility and scalability.

Unlike a standard theme rebuild, Carbon gives you a ready-to-deploy Magento foundation with a pre-configured codebase, integrations, and performance settings, enabling faster time to launch. Because it’s built to follow Adobe’s latest standards, Carbon provides a clean and stable setup that keeps your store upgrade-ready and cost-efficient to maintain. 

Carbon provides:

• Fast time to market – ready to launch in weeks, not months.

• High performance and Core Web Vitals optimisation through streamlined frontend architecture and efficient caching. 

• Feature-rich functionality out of the box, including advanced search, optimised checkout, B2B tools, and SEO enhancements. Built on proven best practices from On Tap’s nearly 20 years of eCommerce experience, Carbon delivers a conversion-ready storefront from day one.

Rebuilding with Carbon also gives you access to On Tap’s Evergreen solution, which provides free lifetime upgrades to keep your store continuously up to date. Every future minor and security release is included, ensuring your site remains secure, stable, and fully compatible without the recurring expense of traditional upgrades.

Before deciding how to approach your next Magento upgrade, it’s important to assess the following realities: 

• Evaluate architectural differences, not just version gaps: As mentioned above, when version numbers appear close, not every Magento upgrade is straightforward. Some releases include significant architectural changes that affect dependencies, integrations, and compatibility. These variations can make “minor” upgrades almost as complex as major ones, which is why it is important to assess the underlying architectural distance and ensure your team has the expertise and resources to manage it effectively.

• Successful upgrades require capability and planning: Because upgrades impact every layer of your site, from infrastructure and database to frontend and integrations, they demand both technical proficiency and planning. Teams must have the skill to manage dependencies, resolve conflicts, and test across environments to ensure stability and performance.

• Upgrades are a recurring investment: Adobe releases new Magento versions three to four times a year. Each release involves testing, deployment, and quality assurance, which means upgrades are not one-off tasks but part of your store’s long-term total cost of ownership (TCO).  The most sustainable approach is to treat upgrades as a continuous process: planned, budgeted, and executed in line with Adobe’s release cadence.

Once you understand these realities, the next step is to decide who should manage your Magento upgrades. Depending on your technical foundation and available expertise, you can either continue managing upgrades with your current resources or engage a specialised Magento agency for professional support.

• Your store has a solid foundation with minimal technical debt and limited customisation.

• The version gap is small (for example, from 2.4.4 to 2.4.8).

• Your internal team or current partner has certified Magento expertise and capacity for ongoing maintenance.

If you decide to manage upgrades internally, follow the process in the Step-by-step guide for handling a Magento upgrade on your own section to plan and execute them safely.

• Your site’s architecture is outdated or unstable.

• You have heavy customisation, complex integrations, or large data volumes.

• Your current setup is architecturally distant from the target version. 

• Your internal resources or current partners lack the expertise or time to ensure a safe, efficient upgrade.

If your store falls into one of these scenarios, it’s best to work with an experienced Magento agency. Refer to the Time, cost and key considerations when engaging expert support section to understand the factors that influence project timelines, costs, and how to choose the right Magento partner.

If you decide to manage your Magento upgrade internally, following a clear process as outlined below is essential to reduce risk and maintain site stability. 

1. Prepare and align your infrastructure: Review your current hosting and system configuration to ensure full compatibility with the target Magento version. Upgrade PHP, Composer, MySQL, search engines (for example, OpenSearch), and other dependencies to meet version requirements. Reconfigure your environment if needed to align with Magento’s supported stack.

2. Create a staging environment and back up data: Set up a staging environment that mirrors production as closely as possible. Take complete backups of your database, media, and codebase before beginning the upgrade. Use a copy of live data in staging so you can accurately test compatibility and performance.

3. Audit and categorise modules, themes, and integrations: Compile a complete list of all custom and third-party modules, themes, and connected systems. Identify outdated or unsupported components, determine which require updates or replacements, and remove obsolete or unused ones. 

4. Install the target version: Use Composer to install the target release and update Magento’s dependencies. Watch for conflicts during installation and patch or replace affected modules as required.

5. Module licensing and code refactoring: Renew or replace incompatible extensions. Refactor custom code to align with Magento’s latest architecture and prevent future upgrade complications.

6. Quality assurance and regression testing: Test all critical functions, including product pages, checkout, admin workflows, and integrations. Compare the staging and live sites to confirm consistent performance.

7. Launch and rollback: Schedule the deployment during low-traffic hours. Keep a validated rollback plan ready in case any major issue occurs.

8. Post-launch validation: Monitor logs, performance, and order flow over several days. Resolve bugs quickly to ensure stability and customer experience.

Even when handled carefully, Magento upgrades involve dependencies and system-wide changes that can introduce new performance issues, integration errors, or technical debt if not properly managed.

The time and cost of a Magento upgrade depend on several technical and operational factors, not just version numbers. The most critical include:

• Architecture distance: The deeper the structural changes between your current setup and the target version, the greater the effort. Even minor upgrades can include significant framework shifts. For example, the 2.4.2 to 2.4.3 update required merchants to adopt Composer 2, switch to Elasticsearch as the default search engine, remove obsolete libraries, and update built-in payment integrations. Though it was officially a minor release, it required code refactoring and full regression testing.

• Customisation depth: Stores with many bespoke modules or overrides need additional time for compatibility adjustments and testing.

• Integration scope: Complex connections to systems like ERP, CRM, or PIM must be retested to ensure data integrity and synchronisation.

• Data and catalogue size: Sites with extensive product data, content, and orders take longer to process, migrate, and test.

Price alone should never determine your choice of agency. A low quote can be an indicator that the project scope, testing coverage, or quality assurance time has been reduced to meet budget expectations. While this approach may appear cost-efficient upfront, it can increase the likelihood of post-launch adjustments and higher maintenance effort over time.

Magento upgrades are released regularly, so it’s best to work with a partner who can support your store continuously, not just deliver one-off projects. Look for an agency with:

• Proven Magento expertise and certification.

• A clean, well-documented upgrade process.

• A focus on long-term performance and maintainability, not just project delivery.

Upgrading Magento is not just a technical task but a strategic investment in the long-term health and scalability of your store. When handled correctly, upgrades strengthen performance, enhance security, and keep your platform ready for growth, without unexpected cost or disruption.

At On Tap, we make this process simple and sustainable through our Evergreen solution, which includes free lifetime Magento upgrades after your first project. This removes the uncertainty, risk, and recurring cost that traditionally come with version updates. With nearly 20 years of Magento experience, we ensure your store remains secure, high-performing, and always aligned with Adobe’s evolving standards.

If you want Magento upgrades to be simple, sustainable, and stress-free, contact us to start planning your upgrade strategy with confidence.

1. Why is it important to upgrade Magento regularly?

Regular Magento upgrades help keep your store secure, stable, and compatible with modern technologies. Each new release typically includes security patches, bug fixes, and improvements that help maintain the reliability of your store.

Running outdated Magento versions can increase the risk of security vulnerabilities, compatibility issues with extensions, and performance limitations as the surrounding technology ecosystem evolves.

2. When should you upgrade Magento?

You should consider upgrading Magento when:

• Your current Magento version is approaching the end of Adobe’s support period

• Security patches are no longer provided for your version

• Extensions or integrations begin to show compatibility issues

• Your store experiences performance instability

• Your infrastructure needs newer PHP or database support

Upgrading earlier rather than waiting until issues appear can reduce operational risk and avoid emergency fixes.

3. How long does a Magento upgrade take?

The time required for a Magento upgrade depends on several factors, including:

• the Magento version your store is currently running

• the number of extensions installed on your store

• the level of customisation in your Magento store

• the complexity of your store’s integrations

Minor version upgrades may take a few hours to complete, while more complex upgrades involving custom code and extensive testing can take several days.