github.com/aspring/packer@v0.8.1-0.20150629211158-9db281ac0f89/website/source/intro/why.html.markdown (about) 1 --- 2 layout: "intro" 3 page_title: "Why Use Packer?" 4 prev_url: "/intro/index.html" 5 next_url: "/intro/use-cases.html" 6 next_title: "Packer Use Cases" 7 description: |- 8 Pre-baked machine images have a lot of advantages, but most have been unable to benefit from them because images have been too tedious to create and manage. There were either no existing tools to automate the creation of machine images or they had too high of a learning curve. The result is that, prior to Packer, creating machine images threatened the agility of operations teams, and therefore aren't used, despite the massive benefits. 9 --- 10 11 # Why Use Packer? 12 13 Pre-baked machine images have a lot of advantages, but most have been unable 14 to benefit from them because images have been too tedious to create and manage. 15 There were either no existing tools to automate the creation of machine images or 16 they had too high of a learning curve. The result is that, prior to Packer, 17 creating machine images threatened the agility of operations teams, and therefore 18 aren't used, despite the massive benefits. 19 20 Packer changes all of this. Packer is easy to use and automates the creation 21 of any type of machine image. It embraces modern configuration management by 22 encouraging you to use a framework such as Chef or Puppet to install and 23 configure the software within your Packer-made images. 24 25 In other words: Packer brings pre-baked images into the modern age, unlocking 26 untapped potential and opening new opportunities. 27 28 ## Advantages of Using Packer 29 30 ***Super fast infrastructure deployment***. Packer images allow you to launch 31 completely provisioned and configured machines in seconds, rather than 32 several minutes or hours. This benefits not only production, but development as well, 33 since development virtual machines can also be launched in seconds, without waiting 34 for a typically much longer provisioning time. 35 36 ***Multi-provider portability***. Because Packer creates identical images for 37 multiple platforms, you can run production in AWS, staging/QA in a private 38 cloud like OpenStack, and development in desktop virtualization solutions 39 such as VMware or VirtualBox. Each environment is running an identical 40 machine image, giving ultimate portability. 41 42 ***Improved stability***. Packer installs and configures all the software for 43 a machine at the time the image is built. If there are bugs in these scripts, 44 they'll be caught early, rather than several minutes after a machine is launched. 45 46 ***Greater testability***. After a machine image is built, that machine image 47 can be quickly launched and smoke tested to verify that things appear to be 48 working. If they are, you can be confident that any other machines launched 49 from that image will function properly. 50 51 Packer makes it extremely easy to take advantage of all these benefits. 52 53 What are you waiting for? Let's get started!