Bert Jan Schrijver discusses Malmberg's transition from traditional operations to a containerless continuous delivery model using DevOps principles. Some key challenges included cultural resistance to change, infrastructure limits with Amazon, and ensuring proper testing environments. The approach established expert teams, defined clear principles like infrastructure as code and no downtime, and benefited the business through increased agility, availability, and cost reductions. Areas of ongoing focus include monitoring, performance and security testing, and automated resilience testing.