For investors looking to build long-term wealth, exchange traded funds (ETFs) can be an excellent option.

With built-in diversification and exposure to high-quality companies, they can provide strong returns while reducing risk.

With that in mind, here are three ASX ETFs that could be compelling buy and hold investments.

BetaShares Cloud Computing ETF (ASX: CLDD)

The first ASX ETF that could be worth considering for a long-term investment is the BetaShares Cloud Computing ETF. This fund is packed with companies poised to benefit from the ongoing structural shift to cloud technology.

BetaShares recently tipped this ETF as a buy, pointing out that cloud computing has been one of the fastest-growing areas in tech. The fund manager highlights that despite its strong growth, a large proportion of digital data and software applications are still managed outside the cloud, meaning there is significant potential for further expansion.

The ETF holds shares in some of the biggest names in cloud computing, including Shopify (NYSE: SHOP), Zoom (NASDAQ: ZM), and Snowflake Inc (NYSE: SNOW). These companies are well-positioned to thrive as businesses and consumers continue to embrace cloud-based solutions.

VanEck Vectors Morningstar Wide Moat ETF (ASX: MOAT)

Another ASX ETF that could be a top buy and hold option is the VanEck Vectors Morningstar Wide Moat ETF. If you're a fan of Warren Buffett's investment philosophy, this ETF might align perfectly with your strategy.

The fund tracks a portfolio of companies with sustainable competitive advantages, or "wide moats," at reasonable valuations. These are qualities Buffett looks for in Berkshire Hathaway's (NYSE: BRK.B) investments. The ETF currently holds around 50 shares, including Adobe (NASDAQ: ADBE), Nike (NYSE: NKE), and Walt Disney (NYSE: DIS).

This strategy appears to be working well. The index the ETF tracks has delivered an average return of 17% per annum over the past decade, demonstrating the power of investing in dominant businesses with strong long-term prospects.

BetaShares Diversified All Growth ETF (ASX: DHHF)

For investors looking for broad global growth exposure, the BetaShares Diversified All Growth ETF could be an ideal option.

BetaShares has rated this ETF as a buy, emphasising its "all-cap, all-world" share portfolio. The fund provides exposure to approximately 8,000 growth stocks across Australia, the United States, developed markets, and emerging markets.

With its focus on growth, the ETF could be well suited to investors with a high tolerance for risk and a long investment horizon. By holding a vast array of companies across different sectors and regions, it provides diversification while maintaining the potential for strong long-term returns.