One of the questions I'm asked most often is whether they should solve a problem with Power Platform or custom development. The short answer is: it depends. But that "it depends" has clear criteria that you can evaluate before committing budget.
The common mistake: choosing the tool before understanding the problem
Many companies come to Power Platform because someone told them it's fast and cheap. Others dismiss it because "it's not real development". Both positions are built on the same mistake: choosing the tool before defining the problem. First you need to understand what you need to solve, how many people will use it, what systems it needs to touch, and what happens if it fails.
When Power Platform is the best option
Power Platform makes sense when you need a functional solution in weeks instead of months, when the process is relatively standard (approvals, forms, reports, document automation), and when your users already work in the Microsoft ecosystem. It's also ideal when the business team needs to make changes without depending on IT for every adjustment.
Real examples where I've seen the biggest impact: digitizing production management that lived in Excel, automating invoice processing that was done by hand, creating executive dashboards that previously required someone to prepare a PowerPoint every week.
The cost of a Power Platform solution is usually 3 to 10 times less than equivalent custom development. And delivery time goes from months to weeks. According to Forrester, average savings for medium-complexity solutions are around $40,000.
When you need custom development
Power Platform has limits. If your solution needs to handle thousands of concurrent transactions, if it has very complex business logic with multiple real-time integrations, or if it requires a highly customized user interface, custom development is still necessary.
It's also the better choice when you need total control over performance, architecture, and deployment cycle, or when the final product will be sold to third parties. Power Platform is an internal platform, not a framework for building products.
The approach that works best: hybrid
In practice, the best implementations combine both. Power Platform solves 70-80% of internal processes (the ones that don't justify months of development), and custom development is reserved for core systems that need scalability and total control.
Power Platform can also connect with custom APIs and services through custom connectors, so it's not a binary decision. You can start with Power Platform to validate the idea in weeks, and migrate to code only the parts that really need it.
How to decide in practice
Ask yourself these questions: How many users will use it? Do they need mobile access? What systems does it need to integrate with? How often do requirements change? Do you have a development team available? What's the real timeline?
If the answer is "fewer than 500 users, Microsoft ecosystem, requirements that change monthly, and we need it yesterday", Power Platform wins. If it's "SaaS product with 10,000 concurrent users and complex algorithmic logic", custom development.
Most of the cases I see in mid-sized companies fall in the first group. And most of those companies have been waiting for months or years for IT to develop something they could have running in 4 weeks.