Science:
* Spacecraft Data Operations: Used in the context of space exploration and managing data collected from spacecraft.
* Solar Dynamics Observatory: A NASA mission dedicated to studying the Sun.
Other:
* System Design Optimization: In the field of engineering and technology.
* Service Delivery Optimization: In the context of business processes and service management.
* Senior Deputy Officer: A position in some organizations.
* School District Office: Used in the context of educational administration.
To understand the full form of SDO, you need to consider the context in which it is used.