Growth stocks are attractive to many investors, as above-average financial growth helps these stocks easily grab the market's attention and produce exceptional returns. But finding a great growth stock is not easy at all.By their very nature, these stocks carry above-average risk and volatility. Moreover, if a company's growth story is over or nearing its end, betting on it could lead to significant loss.However, it's pretty easy to find cutting-edge growth stocks with the help of the Zacks Growth Style Score (part of the Zacks Style Scores system), which looks beyond the traditional growth attributes to analyze a company's real growth prospects.Our proprietary system currently recommends ServiceNow (NOW) as one such stock. This company not only has a favorable Growth Score, but also carries a top Zacks Rank.Research shows that stocks carrying the best growth features consistently beat the market. And returns are even better for stocks that possess the combination of a Growth Score of A or B and a Zacks Rank #1 (Strong Buy) or 2 (Buy).Here are three of the most important factors that make the stock of this maker of software that automates companies' technology operations a great growth pick right now.Earnings GrowthArguably nothing is more important than earnings growth, as surging profit levels is what most investors are after. And for growth investors, double-digit earnings growth is definitely preferable, and often an indication of strong prospects (and stock price gains) for the company under consideration.While the historical EPS growth rate for ServiceNow is 219.5%, investors should actually focus on the projected growth. The company's EPS is expected to grow 25.5% this year, crushing the industry average, which calls for EPS growth of 14.8%.Cash Flow GrowthWhile cash is the lifeblood of any business, higher-than-average cash flow growth is more important and beneficial for growth-oriented companies than for mature companies. That's because, growth in cash flow enables these companies to expand their businesses without depending on expensive outside funds.Right now, year-over-year cash flow growth for ServiceNow is 38.2%, which is higher than many of its peers. In fact, the rate compares to the industry average of 9.5%.While investors should actually consider the current cash flow growth, it's worth taking a look at the historical rate too for putting the current reading into proper perspective. The company's annualized cash flow growth rate has been 195.7% over the past 3-5 years versus the industry average of 16.8%.Promising Earnings Estimate RevisionsSuperiority of a stock in terms of the metrics outlined above can be further validated by looking at the trend in earnings estimate revisions. A positive trend is of course favorable here. Empirical research shows that there is a strong correlation between trends in earnings estimate revisions and near-term stock price movements.There have been upward revisions in current-year earnings estimates for ServiceNow. The Zacks Consensus Estimate for the current year has surged 1.9% over the past month.Bottom LineWhile the overall earnings estimate revisions have made ServiceNow a Zacks Rank #2 stock, it has earned itself a Growth Score of B based on a number of factors, including the ones discussed above.You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.This combination indicates that ServiceNow is a potential outperformer and a solid choice for growth investors. Time to Invest in Legal Marijuana If you’re looking for big gains, there couldn’t be a better time to get in on a young industry primed to skyrocket from $17.7 billion back in 2019 to an expected $73.6 billion by 2027. After a clean sweep of 6 election referendums in 5 states, pot is now legal in 36 states plus D.C. Federal legalization is expected soon and that could be a still greater bonanza for investors. Even before the latest wave of legalization, Zacks Investment Research has recommended pot stocks that have shot up as high as +285.9%. You’re invited to check out Zacks’ Marijuana Moneymakers: An Investor’s Guide. It features a timely Watch List of pot stocks and ETFs with exceptional growth potential.Today, Download Marijuana Moneymakers FREE >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report ServiceNow, Inc. (NOW): Free Stock Analysis Report To read this article on Zacks.com click here.