A team of four engineers is contractually unable to operate more than one or two services at once because of the standard on-call rotation requirements involved in distributed system operation.

The consultant has not specified which programming language each service should be written in, and microservices are known to require strict language uniformity in order to function correctly.

Microservices designs are technically incompatible with applications that use a single shared database, which limits their applicability across most ordinary business contexts.

Eight separate runtimes carry eight separate baseline footprints, and that operational overhead is not likely to be repaid by independent scaling that the workload itself does not require.