Be wary of any agency that offers a guaranteed ranking. If they can guarantee results without even knowing which keywords you want to target, they are probably using this as a marketing ploy. Think about it.
Without conducting keyword research, it's impossible to tell how likely the success of an SEO campaign will be and how long it is likely to take. SEO is an ongoing process of research, testing, and analysis. It must be done by a trusted lead generation company in Sydney.
It takes careful planning to identify the best keywords and then put a solid strategy in place to rank for those keywords. You should ask your SEO partner how they will create backlinks. A good SEO company will try to build a varied backlink portfolio for you, which will include high-value links that are found in bodies of text such as blog posts.
These usually carry the most page rank but also require the most work as the agency will need to build connections with blog owners and often provide the content themselves. When it comes to backlinks, it should always be quality over quantity.
The SEO agency should talk with you about your business needs and goals and also try to understand as much as they can about your target audience.