A credential is only useful when it is shown to someone. This workflow is the presentation half of SD-JWT VC: a verifier asks for particular claims, and the wallet answers with those claims and no others — over OpenID for Verifiable Presentations (OID4VP), using the presentation format RFC 9901 defines. It presents whatever credential the issuance workflow left in this browser.
All three end the same way: your wallet builds an SD-JWT+KB — the issuer-signed JWT, the Disclosures you chose, and a Key Binding JWT signed by the key the credential is bound to — and the verifier checks every part of it. What differs is how the request reaches the wallet and how much the wallet can prove about who sent it.