Keyword research is a constant process. Trends change. Seasons change. Popular terms and catch-phrases change. SEO and marketing agencies are a great resource for ensuring that keyword research is done on a regular basis. You should refresh your research at least quarterly, ideally monthly, to stay ahead of your competitors. Partnering with a reputable SEO agency is a great way to ensure you’re always ahead of your competition.
Anjali, I think you should start with the Keyword Planner from Google. As a free option it is one of the best. SEMRush is great but you need to pay for it to be really effective. After GKP (Google Keyword Planner) I would also take a look at the other, more unknown suggestions Ankit talked about like KWFinder or Keyword Eye – they are quite good and will sometimes reveal keywords you wouldn’t find otherwise (for free).

The Google Keyword Tool is SUPER helpful for building a foundation for your keyword research strategy. At the end of the day, these search numbers are coming straight from the horses mouth. You can filter down to a hyper-local level and see which keywords are getting the largest search volume. Plus, with it’s integration with PPC you can get a quick idea about commercial intent by looking at the bid and competition metrics. How much are people bidding on KWs, higher = more likely to generate a return. Usually its aligned with search intent. That said, the trending data is a little less reliable. I would still use Trends to analyze the popularity/ seasonality of KW search volume.

I’ve found google trends to be an interesting way to see if a keyword (and by extension a niche) is growing or shrinking, and whether it’s seasonal or not. I can’t think of any other tool out there that can reliably tell you this information, so that’s really useful. Also, if you’re building a site, especially an authority site, getting onto something that’s trending upwards is a fantastic idea. 

Note - at this point Google already has baseline metrics from other search results. So, if your site beats them by a factor of say 3x then Google thinks - hey.. this page looks to be way better - so why not stick its rankings in the long term and why not even bounce it up higher and see what happens and measure again how users engage with the site?
Long tail keywords are the low hanging fruit of keyword research. These are phrases with low competition, and generally low search volume as well. While any individual long tail keyword might not attract a ton of organic traffic, targeting them en masse can be an easy way to quickly pick up steam in your niche and poise yourself for tackling more competitive search terms.

Keyword research should come first in your digital marketing strategy. Increasing web traffic remains the most important criteria for measuring marketing success and all search begins with keywords. According to Hubspot, more than 60% of marketers identify increasing their organic search presence as their top digital marketing priority. Though SEO continues to evolve, keyword research and content strategy remain the cornerstones of digital marketing.

We also have a very unique “Local Search” only keyword search that cross references the populations of all towns and cities in USA, Canada & UK. So you can put in a search like “plumber” then choose to see all the cities in “California” with a population of between 50k – 100k and it will spit out plumber suggestions attached to the locale. Pretty neat.
Moz Keyword Explorer - Input a keyword in Keyword Explorer and get information like monthly search volume and SERP features (like local packs or featured snippets) that are ranking for that term. The tool extracts accurate search volume data by using live clickstream data. To learn more about how we're producing our keyword data, check out Announcing Keyword Explorer.
First of all Thank you !! for sharing our post on social media, that really helps get the word out to folks who may need to know about how awesome Jaaxy is. As far as the comparison, well they are both good tools, I will say that the Keyword tool inside WA portal in accurate and has very good useful information, I use it as well. It is however not a complete suite of tools like Jaaxy is, with the Rank Checker for 3 Major search engines, and the search analysis features and the “alphabet soup” search which is amazing as far as relevancy for any niche.. I have found Jaaxy to be extremely accurate in the data provided and as you can see, my ranks are showing as much and this website is still fairly young.  I have now sent 4 consecutive posts to page 1 or 2 within minutes after posting, simply by using the data Jaaxy provides and following what we have been taught on how to use the data.
I recently decided to go with ahrefs after using spyfu for a couple years and trialing secockpit. I was a moz client for awhile too about a year ago. I found spyfu data to be sketchy (or just plain wrong) fairly often, and moz, I don’t know, just didn’t seem like they were really into supporting what I wanted to know. secockpit was achingly slow for a trickle of data. ahrefs isn’t nearly so graph-y as spyfu, but they are so blazing fast and the data is so deep. I enjoy it a great deal, even if it is spendy.