There are two main types of super funds in Australia: defined benefit funds and accumulation funds, with the latter being the most common. Within these are various super categories (explained further in guide). One of which is corporate super.
Corporate superannuation is a category of super funds offered by corporations, like Telstra, and are available to employees of said corporation. If the corporate super fund has great returns and offers even more benefits to its employees, it can help a corporation stay competitive for employees in the industry.
Corporate super funds are generally available to ex-employees and even relatives of current employees. Super Guide notes that funds run by the employer, or an industry fund, are generally “not-for-profit” and “low to medium cost, especially for large corporates”. Further, most are “accumulation funds, but some older funds may be defined benefit”.