# Introduction to Reliability

As we previously introduced, _Reliability_ is the probability of a device or system performing its intended function under given conditions for a specified period of time. In this section, we will introduced two perspectives for performing reliability assessments:
1. Defining a limit state function and computing the probability of being in such failure region;
2. Analyzing the failure distributions from a survivability perspective.


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```{attributiongrey} Attribution
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This chapter is written by Patricia Mares Nasarre, Max Ramgraber and Oswaldo Morales Napoles. {ref}`Find out more here <risk_reliability_credit>`.
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