The authors obtain a complete characterization of all orthogonality preserving operators from a

${\text{JB}}^{*}$-algebra to a

${\text{JB}}^{*}$-triple by using techniques which mainly come from

${\text{JB}}^{*}$-triple theory and which are independent of the results previously obtained by other authors dealing with this subject:

*W. Arendt* [Indiana Univ. Math. J. 32, 199–215 (1983;

Zbl 0488.47016)] who initiated the study by considering operators preserving disjoint continuous complex functions of a compact space;

*M. Wolff* [Arch. Math. 62, No. 3, 248–253 (1994;

Zbl 0803.46069)] who established a full description of the symmetrical orthogonality preserving bounded linear operators

$T:A\to B$ between

${C}^{*}$-algebras with

$A$ being unital; and

*N.-C. Wong* [Southeast Asian Bull. Math. 29, No. 2, 401–407 (2005;

Zbl 1108.46041)] who showed that

$T:A\to B$ is a triple homomorphism if and only if it is orthogonality preserving and

${T}^{**}\left(1\right)$ is a partial isometry (tripotent), thus expressing the problem in

${\text{JB}}^{*}$-triple terms.