Telstra Corporation Limited is an Australian telecommunications company which builds and operates telecommunications networks and markets voice, mobile, internet access, pay television and other products and services. It is a member of the S&P/ASX 20 and Australia's largest telecommunications company by market share. Telstra is the largest wireless carrier in Australia, with 18.8 million subscribers as of 2020.
Telstra has a long history in Australia, originating together with Australia Post as the Postmaster-General's Department upon federation in 1901. Telstra has transitioned from a state-owned enterprise to a fully privatised company and has recently focused on diversified products and emerging technologies.
