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Salesforce Classic vs. Lightning: Why Hiring a Salesforce Lightning Developer is Key to a Smooth Transition

April 7, 2025

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Salesforce offers two distinct user interfaces, Classic and Lightning, to support the varied needs of different businesses. 

Salesforce Classic is known for its straightforward tab-based approach, while Lightning offers a more modern, component-driven design and enhanced mobile experiences. 

While both interfaces enable users to manage contacts, sales processes, business operations, and more, how would you differentiate between them and opt for the one best suited for your business? 

Well, we are here to help! This blog will compare Salesforce Classic and Salesforce Lightning and discuss when to use each of them, why to migrate, and how. 

Let’s get started! 

What is Salesforce Classic?  

Salesforce Classic is the original user interface (UI) of Salesforce, introduced in the early 2000s. It offers a simple, text-heavy, and tab-based layout with basic functionalities, providing a look and feel similar to a traditional webpage. This is suitable for users who prefer a straightforward, no-frills experience.

You get traditional, tab-based navigation with limited customization options. However, you can leverage basic reporting and dashboard capabilities to visualize and analyze your data.

Salesforce Classic
Image source: Salesforce

However, it does not support modern features and customizations, which makes it less visually appealing and less flexible as per the modern needs of today’s businesses. In this case, you have Salesforce Lightning to the rescue!

What is Salesforce Lightning? 

Salesforce Lightning is a modern, intuitive UI designed to enhance user experience with a dynamic, component-based layout. You get a visually appealing and rich layout that improves productivity. 

Lightning offers advanced tools for automation, app building without coding, interactive dashboards, drag-and-drop components, AI integration, comparative charts, infographics, and improved security. Its design makes it easier for businesses to personalize their Salesforce experience, work faster, and take advantage of new features that aren’t available in Classic.

Salesforce Lightning
Image source: Salesforce

Key Differences Between Salesforce Classic and Salesforce Lightning

Basis/UIs Salesforce Classic Salesforce Lightning
Design and layout Offers limited and basic visual elements. Tab-based layout focused on lists and texts. Offers a modern and visually rich interface. You get interactive dashboards, graphics, and drag-and-drop components.
Navigation Navigation is facilitated through static tabs and menus. Navigation is facilitated through utility bars. The homepages can be customized for more personal experiences.
Customization You get basic customization options, such as creating custom pages, and application development requires coding using Apex and Visualforce. You get extensive customization options using Lightning components and App Builder. It leverages drag-and-drop components and minimal coding.
Mobile Responsiveness Limited mobile functionality, as it does not support all mobile devices. Fully mobile, functional, and responsive. Can be used on desktop and mobile.
Productivity Features Basic and mundane dashboards, reporting, and automation using fewer visualization options. Interactive dashboards. Kanban boards, advanced workflow automations, and built-in AI for smarter analytics and insights.
Security and Scalability Lacks modern security enhancements and flexible controls available in Lightning. Includes advanced security features, better data protection, and scalable frameworks for growth.
New features and upgrades No new features and updates. Continuous updates and enhancements.
Overall performance Slow performance Faster and optimized performance

Having reviewed the differences between the two interfaces, it’s clear that now is the time to upgrade to the Lightning version if you haven’t already. 

Why Should You Transition From Salesforce Classic to Lightning?

Transitioning from Salesforce Classic to Lightning is not just about a modern UI shift; it is about advanced customization options, smarter automations, and enhanced user experiences. 

Salesforce Classic is still available for system administrators but is in maintenance mode. Salesforce itself is directing existing users to migrate to Lightning, while new users are offered the same. 

Benefits You Will Get After Migrating from Classic to Lightning Interfaces

Benefits You Will Get After Migrating from Classic to Lightning Interfaces

Increased Productivity

As discussed above, Lightning offers versatile features, including interactive dashboards, customizable homepages, advanced automation tools, and mobile optimization. All this makes users work faster and smarter while helping streamline complex and repetitive tasks, saving time and reducing errors.

Backing it up by the Forrester Consulting study, The Total Economic Impact of Salesforce Lightning, it shows that users save up to 10 hours per employee per week.  

Improved Performance

Lightning UI is optimized for speed and performance, handling large datasets and complex queries more efficiently. Plus, the enhanced real-time data processing capabilities improve overall system responsiveness.

Continuous Innovation

Salesforce CRM continuously adds new features and improvements to Lightning, ensuring it stays up-to-date with the latest technology trends. This makes the platform’s UI more future-proof. 

Better Analytics and AI

Lightning includes advanced reporting, visualization, and AI-powered features like Einstein for smarter decision-making and predictive analytics. With this, businesses can make faster, data-driven choices for growth.

Challenges While Migrating From Salesforce Classic to Lightning 

  • To translate Classic environments into Lightning might require extensive customization, rework, or replacement. 
  • You might experience slower performance and frustration due to unfamiliar navigation in the Lightning environment. 
  • Due to the numerous features that Lightning offers, you may become confused about which ones to enable or retain from Classic. However, utilization of too many features might over-optimize your UI. 
  • There can be implementation delays due to bad timing, workflow disruption, technical failures, lengthy projects, or other reasons. 
  • Migrating data accurately and ensuring all third-party app integrations work seamlessly in Lightning requires careful planning and testing. 

To resolve these challenges, you would require a Salesforce Lightning developer who is an expert in understanding them and suggests and develops efficient solutions. 

How does a Salesforce Lightning Developer Solve Classic to Lightning Transition Challenges?  

How does a Salesforce Lightning Developer Solve Classic to Lightning Transition Challenges?

Hiring a Salesforce Lightning developer is your ultimate solution to all these challenges. With their expertise in Lightning Web Components, Apex, Visualforce, data migration, testing, and more, developers ensure the data is mapped accurately and the migration is seamless. 

Here is a detailed explanation of what jobs Lightning developers perform in this transition: 

Planning the Migration

A developer can thoroughly understand and evaluate the current setup and then conclude what existing components are compatible with the Lightning and what aspects need to be reworked. Then, they can create a complete roadmap for migration and highlight the critical features.

Configuring and Optimizing UI

Salesforce developers can customize and configure the user interface to match business requirements and workflows using features offered by the Lightning version, such as App Builder and Lightning Web Components (LWC). This approach also facilitates the creation of a more personalized and efficient user interface, which can lead to improved user adoption rates.

Ensuring Smooth Migration

Then they can ensure all the records transfer seamlessly, ensuring data consistency and hassle-free migration by following the best practices. 

Managing Feature Overload

Salesforce developers work with stakeholders to assess which Classic features and customizations are essential.

Checking Compatibility and Security

They verify all necessary compatibility, update integrations, and ensure that all security mandates are followed, as the Lightning UI has strict security requirements, and changes in the framework can break existing integrations.

Conducting Relevant Tests

Finally, they perform all relevant tests, such as user adoption testing and bug fixes, to enhance the overall performance of the interface.

Avoiding Implementation Delays

With experienced coding and integration skills, developers manage complex deployments efficiently.

Supporting User Adoption

Developers collaborate with admins to build interactive training environments reflecting the new Lightning experience.

However, you must be thoughtful about how to hire the right Salesforce developer to make an efficient decision for your business.  

While cost is a key consideration in hiring, we have a full-fledged blog describing the costs for hiring Salesforce developers all across the globe. Get all the insights altogether! 

OR 

Read the blog here

Conclusion 

Relying on a basic user interface (UI) can limit your team’s productivity and fail to support personalized experiences. A simple solution is to switch to the more efficient Salesforce Lightning user interface. However, this transition can be challenging and complex, requiring the support of a skilled Salesforce developer. If you’re feeling overwhelmed and unsure about how to find experienced developers for your transition, reach out to our pre-vetted experts Salesforce developers at Smart IT Staff. 

salesforce classics vs salesforce lightning cta

Frequently Asked Questions

Salesforce Classic is available for existing users. However, Salesforce is prioritizing new features, updates, and support for Lightning Experience. Classic receives only critical fixes and security patches.

The Classic to Lightning Salesforce migration timelines depend on data volume, customizations, and user adoption needs. Most projects range from a few weeks for standard orgs to several months for complex environments with heavy customization.

Yes, you can run both interfaces in parallel. Users can switch between Classic and Lightning during phased migrations or training periods, but in the long term, Lightning is recommended for full feature access.

The migration costs widely vary based on the Salesforce org’s complexity and required custom development. Small migrations may cost a few thousand dollars, while large, complex orgs could require $15,000–$50,000 or more. Another factor to it could be the Salesforce developer’s cost for facilitating migration.

All existing data remains intact. Most core customizations (fields, objects, and workflows) transfer automatically. However, some Classic Visualforce pages, custom code, and legacy apps may require refactoring for Lightning compatibility.

Salesforce provides a Lightning Readiness Report to assess your org’s compatibility, highlighting areas needing attention and estimating effort required.

Look for certified Salesforce Lightning developers with proven migration experience, a strong understanding of both UIs, and expertise in Apex, Lightning Web Components, and business process analysis. Ask for references and review past migration projects for success and user adoption. Check out how to hire the right Salesforce developers for your business.