I firmly believe that buy and hold investing is one of the best ways to grow your wealth.

That's because the longer you are invested, the longer you can take advantage of the power of compounding.

And don't worry if you're not a fan of stock picking because there are exchange-traded funds (ETFs) out there to make life easier.

These funds allow you to buy a large group of shares in one go, which can help diversify a portfolio and reduce risk.

But which ASX ETFs could be good options for investors right now? Let's look at three that could be top long-term picks:

BetaShares NASDAQ 100 ETF (ASX: NDQ)

When making long term investments, it is always advisable to focus on quality.

The good news is that the BetaShares NASDAQ 100 ETF is home to 100 of the highest quality companies that you will find.

Among its holdings, which are the 100 largest non-financial companies on the Nasdaq index, you will find global giants and household names. This includes the likes of Nvidia (NASDAQ: NVDA), Apple (NASDAQ: AAPL), Microsoft(NASDAQ: MSFT), and Starbucks (NASDAQ: SBUX).

The NASDAQ 100 index has delivered stunning returns over the past decade. And given the quality of its holdings, it would not be surprising if it continued this positive trend over the next decade.

Betashares Global Cash Flow Kings ETF (ASX: CFLO)

Another ASX ETF that could be a top buy and hold option is Betashares Global Cash Flow Kings ETF.

Betashares, which recently recommended the ETF as one to buy, highlights that companies that generate high levels of free cash flow have a tendency of outperforming the market over the medium to long term.

As a result, this fund has a good chance of delivering strong returns for investors over the next decade. Its holdings include big names such as search giant Alphabet (NASDAQ: GOOG) and payments leader Visa (NYSE: V).

BetaShares Cloud Computing ETF (ASX: CLDD)

Finally, the BetaShares Cloud Computing ETF could be a top option for investors looking for buy and hold options.

This fund gives investors easy access to a group of companies that stand to benefit greatly from the structural shift to the cloud. This includes companies such as Shopify (NYSE: SHOP) and Zoom (NASDAQ: ZM).

Betashares also recently tipped this fund as a buy. It notes that "cloud computing has been one of the strongest-growing segments of the technology sector, and given much of the world's digital data and software applications are still maintained outside the cloud, continued strong growth has been forecast."