If you have $15,000 ready to invest, putting it to work in the share market could be a smart move.
The key question is where to invest it.
Here are three ASX 200 shares I'd consider buying with the money today.

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Life360 Inc (ASX: 360)
The first ASX 200 share I would consider buying is Life360.
It continues to build momentum as its global platform scales. The company's app has become embedded in users' daily lives, which helps drive engagement and retention. This creates a strong base for monetisation as it expands its range of services.
Rather than relying on a single feature, Life360 is gradually adding new offerings such as driver protection and emergency assistance. These additions create more opportunities to lift revenue per user over time. In addition, its new advertising business could be a meaningful generator of revenue in the future.
With a large and growing user base, even incremental improvements in monetisation could have a meaningful impact on earnings.
Goodman Group (ASX: GMG)
Another ASX 200 share to look at is Goodman Group.
It offers exposure to areas of the market that are benefiting from structural demand. Its business is tied to logistics infrastructure and data-related assets, both of which are becoming more important as digital activity increases.
Ecommerce continues to drive demand for well-located distribution facilities, while the growth of cloud computing and artificial intelligence is supporting demand for data centres.
Goodman's ability to develop and manage these types of assets has been a key driver of its growth.
With these trends continuing to play out, the company remains closely linked to long-term shifts in how goods and data move around the world.
TechnologyOne Ltd (ASX: TNE)
A final ASX 200 share that could be a top option for a $15,000 investment is TechnologyOne.
It has built a reputation for consistent execution. The company provides enterprise software to government and large organisations. These tend to be on long-term contracts.
Its transition to a Software-as-a-Service (SaaS) model has been highly successful and has strengthened its earnings profile, improving visibility and supporting margins.
But management isn't resting on its laurels. The company continues to focus on expanding within its existing customer base, while gradually entering new markets.
This steady approach has translated into reliable recurring revenue and earnings growth over time. The good news is management expects this trend to continue and believes it can double in size every five years.