Application security is essential in today's fast-paced and interconnected world, where cyberattacks are becoming increasingly common and businesses cannot afford to neglect it. To maintain application security, it is crucial to adopt a comprehensive approach that includes regular security audits, secure coding techniques, the use of trusted security frameworks and libraries, encryption of sensitive data, and staying current with updates and patches. Additionally, implementing practices such as minimalism with the principle of least privilege (PoLP), shifting-left with DevSecOps, protecting with web application firewalls, organizing continuous security training sessions, building security into every phase of software development lifecycle (SDLC), regularly backing up data, developing an incident response plan, designing with foresight through threat modeling, and harnessing the power of container security can help enhance application security. By adopting these best practices and utilizing tools like New Relic's interactive application security testing (IAST), businesses can get ahead of potential threats and secure their applications today.