Ranked in these QuestionsQuestion Ranking
Pro Scales very well
Mesos is a battle-proven piece of software which has been used in many large-scale projects (it's used by Twitter, Ebay and AirBnB) and can support hundreds of thousands of nodes.
Pro Good with data processing applications
Many modern data processing applications (Hadoop, Kafka, Spark) run very well on Mesos. This is especially nice because they can all be run on the same resource pool, along with new container packaged apps.
Pro Good for existing workloads
If you have existing workloads, for example (Hadoop, Kafka, Spark, etc), Mesos makes it very easy to use these workloads together.
Con May be over-complicated for small clusters
When working with small clusters (less than a dozen nodes), Mesos may be an over-complicated solution since it's rather low level and designed for large clusters and scaling.