Coming to the duration of the electronic Egypt visa for Australian citizens, it's important to note that the validity of the visa depends on the type of visa you apply for. There are different types of visas available, including tourist visas, business visas, and transit visas.
For tourist visas, which is what most travelers opt for when visiting Egypt, the electronic visa allows you a single entry into Egypt and is valid for a period of 90 days. This means that once you enter Egypt using the e-visa, you can stay in the country for a maximum of 30 days from the date of entry.
It's worth mentioning that the 90-day validity applies to both tourism and business purposes. So, whether you're going for leisure or business purposes, you'll have the same duration of stay.
Now, it's important to keep in mind that the 90-day validity period is not extendable. If you wish to stay in Egypt for a longer duration, you will need to apply for a different type of visa or seek assistance from the relevant authorities in Egypt.