Pulumi recently celebrated its fifth anniversary and to mark the occasion, the company is launching a multi-part series focusing on infrastructure as code. The series will explore various themes such as the excitement surrounding infrastructure as code, its foundational concepts, its internal workings, the convergence of applications and infrastructure, and the advent of the cloud engineering era, with a bonus section on the future of this technology. The first installment has been published, and subsequent parts will be released in the coming weeks. Pulumi expresses enthusiasm for both their past achievements and future prospects.