The Evolution of SaaS
Finding the balance between enterprise solutions and custom Micro-SaaS
Luis Paradela • May 23, 2025 • Software development

Where enterprise solutions meet custom Micro-SaaS
In the ever-evolving landscape of business technology, a significant shift is underway. While traditional enterprise SaaS continues to dominate, a new approach is emerging alongside it: Micro-SaaS built to address specific organizational needs.
But like most bold statements in business, the claim that "enterprise SaaS is dying" is both partially true and not entirely accurate.
The current state of SaaS
Enterprise SaaS remains a cornerstone of modern business technology. Nearly 40% of venture capital funding continues to flow into SaaS companies, creating an ecosystem of third-party solutions for virtually every business function imaginable.
From CRM giants like Salesforce to project management tools like Asana, these platforms have become staples in corporate environments.
And for good reason, they solve complex problems at scale, provide reliable support, and offer comprehensive documentation.
The emerging Micro-SaaS trend
Alongside these established platforms, we're seeing the rise of purpose-built, lightweight applications designed to solve specific business problems. Unlike their enterprise counterparts, these tools don't try to be everything to everyone. Instead, they excel at a narrowly defined set of functions tailored to specific use cases.
As Satya Nadella, CEO of Microsoft, recently suggested, the future may involve more open and customizable interfaces where users build their own experiences by weaving together multiple sources, databases, services, SaaS platforms, and AI agents, for their particular needs.
It's not replacement, it's evolution
The reality is that enterprise SaaS isn't dying, it's decentralizing and evolving. Micro-SaaS is essentially SaaS built backwards: solve for yourself first, then potentially evolve into a product for others.
This nuanced perspective acknowledges that while AI is changing the game, enabling more custom solutions, the fundamental challenges around security, scalability, and maintenance won't simply disappear.
The promises and pitfalls of custom solutions
The Promises
• Perfect Customization
When you build in-house, you can create exactly what you need—no more, no less. Every feature is designed with your specific workflows and objectives in mind.
• Data Control
By keeping your tools in-house, you maintain greater control over your data. This addresses growing concerns about sending sensitive information to third-party servers.
• Agility and Adaptability
Need a new feature or workflow adjustment? When you control the code, changes can potentially be implemented more quickly than waiting for an enterprise vendor's roadmap.
The Pitfalls
• Maintenance Challenges
The enthusiastic creator of an in-house tool might leave the company, taking their knowledge with them. As one observer noted, "Good luck finding any documentation six months after the creator has left!"
• Hidden Costs
A Micro-SaaS built with a LLM might inadvertently rack up thousands of dollars in cloud costs because it's pinging an API indefinitely. Who monitors these unexpected expenses?
• Support Questions
For enterprises developing Micro-SaaS, a critical question remains: Who provides "customer support" when things go wrong? And who maintains the tool as technology evolves?
• Security and Compliance
In-house solutions often lack the rigorous security testing and compliance certifications that established enterprise tools provide as a baseline.
Finding the right balance
The most successful organizations will likely adopt a hybrid approach:
Use Enterprise SaaS for:
Core business functions with established best practices
Areas requiring extensive compliance and security assurances
Functions where the "standard way" is actually the best way
Processes that benefit from extensive third-party integrations
Consider Micro-SaaS for:
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Highly specialized workflows unique to your organization
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Connecting and extending existing enterprise platforms
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Rapid prototyping of new business processes
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Areas where your competitive advantage comes from doing things differently
The proof of concept approach
A thoughtful proof-of-concept approach can help organizations navigate this evolution:
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Start Small: Focus on a specific challenge where custom development could provide significant value
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Plan for Sustainability: Consider maintenance, documentation, and knowledge transfer from the beginning
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Measure Real Costs: Account for development time, maintenance, hosting, and potential technical debt
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Evaluate Against Alternatives: Compare your solution to what's available in the market, considering the total cost of ownership
The future: integration, not replacement
The most promising vision isn't about replacing enterprise SaaS entirely, but rather creating better ways to integrate and extend it. Perhaps the future looks like:
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Custom interfaces built on top of enterprise data sources
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Specialized micro-tools that connect seamlessly with enterprise platforms
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Organization-specific AI agents that work alongside established SaaS solutions
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A thoughtful balance between building and buying, based on where unique value is created
Conclusion: evolution, not revolution
The landscape of business software will continue to evolve. Enterprise SaaS will adapt, becoming more customizable and extensible. Micro-SaaS will mature, with better frameworks for ensuring sustainability and security.
The organizations that thrive won't be those making absolute choices between building and buying. They'll be the ones thoughtfully assessing each business need and finding the right balance between proven enterprise platforms and custom-built solutions.
The future isn't about absolutes, it's about finding your organization's unique equilibrium in an increasingly nuanced technology landscape.
About the Author
Luis Paradela, Chief AI Officer and Co-founder of AccelOne.
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