There is one section in the Cargo.toml file that enables these configurations: the profile section. In this section, you will find one subsection for each of the profiles. Each of them gets declared with the [profile.{profile}] format. So, for example, for the development profile, it would be [profile.dev]. The different profile configuration keywords are the following:

• dev for the development profile, used in cargo build or cargo run
• release for the release profile, used in cargo build --release or cargo run --release
• test for the testing profile, used in cargo test
• bench for the benchmarking profile, used in cargo bench
• doc for the documentation profile, used in cargo doc

When configuring each profile, you will have many options, and we will check all of them out here.