How can we work on growth hacking with limited budget?

1) Follow the skyscrapper technique. In a nutshell:- Find highly linked and promoted content that is relevant to your business (you can do it via buzzsumo) or top linked pages of your competitors (you can do it via ahrefs).- Then do your best to improve said content on your own site.- Then contact every influencer/webmaster that either shared or linked the now old content of your competitors and kindly show them your new article, explaining the improvements you have done. - Soon enough, most of them will start linking to your site as you have quality content about that certain topic.

2) Also, you can try to guestpost in blogs or media sites related to your business. The concept is that you write a decent article for them about a certain topic and you can link said article to your site in order to obtain relevance.

The only real cost of those growth tactics is your own time writing content and contacting key influencers/relevant websites. 

Hope it helps!

Growth hacking means working with agile methods in mind and using every available insight garnered through analytics to make well-informed decisions. This means you will need to make sure you have the best SEO strategies in place and SEO campaigns to help you push forward your product and or services. It does not en there, you will also need to incorporated wider marketing techniques will then help you in achieving your goals and objects.