When it comes to long-term investing, one of the smartest approaches is to keep things simple.

Rather than trying to time the market or pick the next hot stock, investors can often do better by choosing a few high-quality exchange-traded funds (ETFs) and letting compounding do its work.

Here are three fantastic ASX ETFs that could be worth buying today and holding for a decade or more.

BetaShares S&P/ASX Australian Technology ETF (ASX: ATEC)

Australia may not be as famous as the US for technology giants, but we do have a growing number of home-grown innovators. The BetaShares S&P/ASX Australian Technology ETF gives investors exposure to them in a single trade.

This includes companies like WiseTech Global Ltd (ASX: WTC), whose logistics software is used around the world, and Xero Ltd (ASX: XRO), which has become a dominant player in small business accounting software. With more businesses and consumers shifting to digital platforms, these companies are well placed to keep growing over the next decade.

For investors who want a slice of Australia's tech story without betting on a single company, the BetaShares S&P/ASX Australian Technology ETF could be a top choice. It was recently named as one to consider buying by Betashares.

BetaShares Diversified All Growth ETF (ASX: DHHF)

Another ASX ETF that could be a top buy and hold option is the BetaShares Diversified All Growth ETF.

This fund has been designed as an all-in-one growth portfolio. It holds a globally diversified mix of low-cost index funds covering Australian, US, European, Asian, and emerging market shares.

That means with just one ETF, you're gaining exposure to thousands of stocks worldwide. From US leaders like Apple (NASDAQ: AAPL) and Microsoft (NASDAQ: MSFT) to growth shares out of the UK and France, DHHF spreads risk across markets and industries.

For long-term investors, this kind of diversification is invaluable. It reduces reliance on any single country or sector and gives you broad exposure to global economic growth. It was also named as one to consider buying.

BetaShares India Quality ETF (ASX: IIND)

Finally, India is one of the fastest-growing major economies in the world, with a population that is becoming younger, wealthier, and more digitally connected. The BetaShares India Quality ETF offers investors direct exposure to this powerful growth story by focusing on India's highest-quality stocks.

The fund selects 30 companies based on strong profitability, low debt, and consistent earnings. Its top holdings include Infosys Ltd (NYSE: INFY) and Tata Consultancy Services Ltd (NSEI: TCS), two of India's global IT leaders, alongside consumer staples like Hindustan Unilever Ltd and major financials such as ICICI Bank Ltd (NSE: ICICIBANK).

By blending technology, banking, and consumer companies, the BetaShares India Quality ETF captures the industries driving India's rapid transformation into one of the world's leading economies. It was named as one to consider by the fund manager.