Hi! Great question, because evaluating a vendor's competencies and experience is a key point when choosing a partner for long-term cooperation. First, it's important to examine the company's portfolio and make sure they have worked on projects similar to yours in terms of complexity and scope. For example, if you need a .NET MAUI solution, it's worth looking at companies that offer
.NET MAUI development solutions. Look at their case studies and see what problems they solved, what technologies they used, and what results they achieved. Second, it is a good idea to ask for references from previous clients. This will give you an opportunity to get an honest opinion about the vendor's work and learn about possible pitfalls. Next, it is important to organize face-to-face or online meetings with potential suppliers to better understand their approach to work and interaction style.