This Is What You Came For is a song by Scottish DJ Calvin Harris and Barbadian singer Rihanna. It was released on January 29, 2016, as the lead single from Harris's fifth studio album, Motion (2017). The song is a dance-pop, electronic, and house song with a moderate tempo. The lyrics of the song are about a woman who is looking for a physical relationship and how she is not afraid to ask for it.

This Is What You Came For was a commercial success, reaching number one in over 26 countries, including the United States, Canada, and the United Kingdom. The song was also certified 10x platinum by the Recording Industry Association of America (RIAA).

The song received generally favorable reviews from music critics, who praised Harris's production, Rihanna's vocals, and the song's catchy melody. The song was also nominated for a Grammy Award for Best Pop Duo/Group Performance.

The song's music video was directed by Emil Nava and features Rihanna performing the song in a variety of locations, including a desert, a pool, and a nightclub. The music video has been praised for its visuals and its ability to capture the song's sensuality.

Here are some of the reasons why This Is What You Came For is such a popular song:

The song's catchy melody is easy to remember and sing along to.
The song's lyrics are relatable to many people who are looking for a physical relationship.
Rihanna's vocals are powerful and seductive.
Harris's production is atmospheric and immersive.
The song's music video is visually stunning and captures the song's sensuality.

This Is What You Came For is a great example of a dance-pop song that has all the elements of a hit. It's catchy, sensual, and has a great message. If you're looking for a new song to add to your playlist, I highly recommend checking out This Is What You Came For.
Here are some additional details about the song:

The song was written by Calvin Harris, Rihanna, and Ilya Salmanzadeh.
The song's title is a reference to the phrase "this is what you came for," which can mean that someone is expecting a specific outcome or that someone is looking for a specific experience.
The song's music video was filmed in Los Angeles and features Rihanna performing the song in a variety of locations.
The song has been covered by many artists, including Rita Ora, Demi Lovato, and Fifth Harmony.