S: build - https://www.observeinc.com/resources/observability-build-or-buy?_gl=1*1l1wasf*_up*MQ..*_ga*NTU0MjgzOTM1LjE3MzY5NjQwMjE.*_ga_WHNXWVEKF7*MTczNjk3MDc0Ni4yLjAuMTczNjk3MDc0Ni42MC4wLjA.