Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Source: itproportal.com. Organisations have a mix of legacy and advanced systems. Regardless of the race towards digitalisation, it is impossible to rip and replace legacy systems, entirely. Primary blocker is the dependency on the system status quo to generate revenue and difficulty of making changes on a running system. Next hurdle is the lost knowledge