You can migrate to Australia by obtaining a legally valid VISA. A visa is a proof that you are living in Australia and working with permission from the Australian Government. There are many types of visas that allow you to live and work in Australia as its permanent resident.
You can apply with multiple categories for skilled migration, partner visa, business category, child visa, family sponsorship, etc. A right visa for you depends entirely on your current situation and future needs. If you are looking for a job and have experience in your area of specialization then you can apply for skilled migration by fulfilling the eligibility criteria directly.
Visa requirements also vary, but its general requirements are:
.You must be under 45 years of age, at the time of visa registration (for skilled migration category)
. You must choose a business that relates to or is closely related to your work experience from the relevant business demand list in Australia.
. To apply for skilled migration programs you must obtain relevant IELTS / PTE marks.
. You must have a positive skills assessment report from the concerned Assessing Authority.
. You must have a minimum educational qualification according to the Australian Education System standards .
.You must be in good health and possess good character.
. You must obtain the minimum Australia immigration passing score under various immigration factors.