The main development of our online store (tential.jp) is made with Nuxt framework, and although measures to improve the functionality of the e-commerce site are being taken every day, development speed has been a bottleneck in achieving functional improvements, and the webpack build speed when launching the development server has been a notable issue. The webpack build speed when launching the development server was a notable bottleneck. By migrating to Nuxt3, we have improved the build speed, which had been a bottleneck, and also increased the performance per ECS instance. I will share with you how it changed and how we improved performance from both a development and customer experience perspective, and how we have actually done so since.