What do they mean by "microservice" in this context? In a microservice architecture there is a topology of services. Data & Requests move and fan out in this to

What do they mean by "microservice" in this context? In a microservice architecture there is a topology of services. Data & Requests move and fan out in this topology. For algorithms "microservice" architecture is highly dubious. You may perform point-lookups (given X, categorize Y) but you may also perform a large-scale computation (given millions of X, categorize Y). In that case, moving _code_ around instead of data is much more valuable. Thus you get systems like SQL, Hadoop, Spark where code is shipped around instead of data.