The ASX has been experiencing plenty of volatility lately, but for long-term investors, that's often a good thing. When markets wobble, high-quality investments can trade at more attractive valuations, setting the stage for strong future returns.

For those looking to put $10,000 to work in April, ASX exchange-traded funds (ETFs) offer an easy way to gain instant diversification while taking advantage of current market conditions.

Here are a couple of top ASX ETFs that could be great options this month. Let's see what sort of shares they are invested in:

Vanguard MSCI Index International Shares ETF (ASX: VGS)

Diversification is key to long-term investing success, and Australian investors often have too much exposure to local stocks.

The Vanguard MSCI Index International Shares ETF helps solve this issue by providing easy access to over 1,400 leading global companies. This includes some of the biggest names in the world, such as Apple (NASDAQ: AAPL), LVMH, Microsoft (NASDAQ: MSFT), Nestle, Starbucks (NASDAQ: SBUX), and Telsa (NASDAQ: TSLA).

This means that with this popular ASX ETF, investors gain exposure to the global economy's future growth without needing to pick individual winners.

Over the last decade, this ASX ETF has delivered strong returns, and with a large number of quality stocks among its holdings and the fund trading well short of its highs, it remains a compelling option for Australian investors looking beyond the ASX in April.

Betashares Nasdaq 100 ETF (ASX: NDQ)

Technology stocks have had a bumpy ride in recent weeks, but history shows that investing in innovation can be very rewarding over the long run.

That's where the Betashares Nasdaq 100 ETF comes in. This hugely popular ASX ETF provides exposure to 100 of the largest non-financial companies listed on the Nasdaq stock exchange, which includes many of the world's most innovative businesses.

The Nasdaq 100 is home to household names such as Amazon (NASDAQ: AMZN), Google parent Alphabet (NASDAQ: GOOG), and Meta Platforms (NASDAQ: META), as well as companies at the forefront of artificial intelligence (AI), cloud computing, and digital transformation, such as Nvidia (NASDAQ: NVDA) and Broadcom (NASDAQ: AVGO).

While tech stocks can be volatile in the short term, long-term investors have been handsomely rewarded. And with AI set to reshape industries, cloud computing expanding rapidly, and digital payments continuing to grow, the Betashares Nasdaq 100 ETF offers an easy way to gain exposure to these powerful trends without having to pick stocks.