Security team builds services, solutions and tools for teams within Pinterest to manage accesses of critical production resources as well as facilitate adding authentication, authorization and accounting within critical production micro-services. Issuing identities to > 130k AWS EC2 instances, using them to make authentication and authorization decisions high bandwidth critical traffic flow conditions while services communicate in a mesh, requires a great deal of performance and stability. GoLang provides exactly that. Also primary engineering skills in Security team need not to be fully familiar with complex programming logic requires in Java/Kotlin while avoiding the pitfalls on runtime failures or uncertain behavior using Python in production leads us to GoLang