Honestly, it all depends on the particular industry that you are in. How well established your competitors are in your field, and what is the SERP (Search Engine Ranking Page) of your website.
An SEO Agency in India that works across the world practices the following:
1. Conducting website audit to analyze existing site structure
2. Competitor Analysis to identify strengths and weaknesses
3. Creating SEO Strategies around these gaps
4. Keyword Research
5. Build Backup links
And much, much, much, much more! SEO is a comprehensive process where many factors take accountability for the results to appear.