Kazushi Kamegawa's presentation at Microsoft Build Japan 2024, focusing on DevTechPart, highlighted new technologies for developers, especially new services and tools like Vector for SQL Database, Azure Web Apps, Load Testing, .NET Aspire, and App Modernize. It emphasized the announcement of Secure by Operations for enhanced security, the countdown to the discontinuation of NTLM, improvements to Azure Load Testing, the public preview of the next-generation Flex Consumption for Azure Functions, and the migration assessment support using GitHub Copilot, providing vital information for efficient testing and modernization of applications.