Victoria, 7 providers listed on MSP Pie offer Duo Security. Some background: duo Security is a technology vendor whose products some providers specialise in deploying and managing. For context: comparing providers here usually means checking their actual partner tier or certification level with this vendor, not just that they mention it.
Among this group in Victoria, the most common specialisms are Telecommunications (1), Essential Eight (1), ISO 27001 (1), ISO 9001 (1), Cyber security (1). Between them, this group of providers in Victoria covers 10 distinct specialisms in total. The longest-established has operated since 1990; the newest, since 2006. Between them, they cover 7 different suburbs -- North Melbourne, Surry Hills, Melbourne, South Yarra, Flemington, Ringwood, MELBOURNE. 5 of the 7 have a physical office in Victoria; the rest reach it through their recorded service area. Among these 7, 2 run more than a single office nationally.