TechEx gathers constant battlefield feedback about its drones' performance and makes regular changes based on soldiers' requests. Ukrinform/Ukrinform/Sipa USA

The fast-moving arms development race amid Russia's war against Ukraine means that the defense companies can't ever really consider a product finished or stop making regular updates, a leading Ukrainian drone maker told Business Insider.

Ukraine's defense companies gather constant feedback from soldiers using their products in combat and make frequent updates, sometimes daily. Many companies and soldiers say that without these updates, their gear could become irrelevant on the battlefield within weeks.

Oleg, an executive at major Ukrainian fiber-optic and interceptor drone maker TechEx, told Business Insider that "the most important thing is that you want this product to evolve over time.…