Salesforce Lightning vs. Classic: The 2025 Decision Guide

The Critical Choice for Modern Businesses

As Salesforce phases out Classic (no updates since 2023), Lightning emerges as the only future-proof option with AI, mobile optimization, and superior analytics. Here’s what you need to know to make the right decision.

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Key Differences at a Glance

Feature	Lightning (2015+)	Classic (Legacy)
Interface	Modern, component-based, drag-and-drop	Text-heavy, tab-based
Performance	50% faster load times, single-page app	Slows with large datasets
AI Integration	Einstein AI for predictions & automation	None
Mobile Support	Fully responsive design	Limited functionality
Customization	Lightning App Builder, LWC components	Rigid, requires coding (Visualforce)
Security	LockerService for component isolation	Basic security protocols
Analytics	Interactive dashboards, real-time filters	Static reports

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Why Lightning Dominates in 2025

1. Productivity Boost

• 25% faster task completion (Tech.co study)
• Kanban views for visual pipeline management
• Activity timelines streamline customer interactions

2. AI-Powered Insights

• Einstein Analytics predicts churn, scores leads, and automates contacts
• 30% more accurate sales forecasts than Classic

3. Future-Proof Architecture

• Built on Lightning Web Components (LWC) for faster development
• Seamless integration with Salesforce Genie (real-time data platform)

4. Cost Efficiency

• 341% ROI reported by businesses post-migration (Salesforce)
• No upgrade costs (Classic is no longer supported)

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When Classic Might Still Work

Consider Classic only if:

• Your team refuses to retrain (though Trailhead makes this easy)
• You rely on unsupported legacy apps (high risk)
• You’re sunsetting Salesforce within 12 months

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Migration Made Simple

Salesforce provides:

• Free Trailhead training
• Data migration tools
• Pilot programs to test Lightning risk-free

“Teams transitioning to Lightning see 40% faster deal cycles within 6 months.”
—Salesforce Customer Success Report

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Tectonic provides:

• Customized org audit
• Lightning Transition Map and Plan
• Guided Assistance through every step
• Testing
• End User Training

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The Verdict

✅ Choose Lightning if: You want AI, mobile access, and a scalable platform.
⚠ Avoid Classic: It’s outdated, unsupported, and hampers growth.

Next Steps:

1. Audit your Classic customizations.
2. Train teams via Trailhead.
3. Run a pilot with a test group.

Pro Tip: Use Lightning Adoption Dashboards to track migration progress.

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Need help transitioning?  Contact Tectonic.