DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems development life cycle and provide continuous delivery of high-quality software. In web app development, DevOps helps streamline collaboration between development and operations teams, automate workflows, and accelerate the delivery of web applications.

Some key benefits of DevOps in web app development include faster time-to-market, improved collaboration and communication between teams, increased efficiency through automation, enhanced scalability and reliability of web applications, and better alignment with business objectives.

DevOps practices such as continuous integration (CI) and continuous delivery (CD) automate the process of building, testing, and deploying web applications. This results in shorter deployment cycles, reduced risk of errors, and the ability to release updates to production more frequently, leading to faster innovation and responsiveness to user feedback.

Some commonly used tools in DevOps for web app development include version control systems like Git, continuous integration servers like Jenkins or Travis CI, containerisation platforms like Docker, configuration management tools like Ansible or Puppet, and cloud platforms like AWS, Azure, or Google Cloud Platform.

DevOps fosters a culture of collaboration and shared responsibility between development and operations teams. By breaking down silos and promoting cross-functional collaboration, DevOps encourages teams to work together towards common goals, resulting in faster delivery of high-quality web applications.