Ideally a healthy blend of both. Wheels where it relates to your companies core competences or there's a gap in the market. Glue for everything else (you don't

Ideally a healthy blend of both. Wheels where it relates to your companies core competences or there's a gap in the market. Glue for everything else (you don't need to invent an infrastructure provisioning solution unless you're and infrastructure provisioning companies--there's plenty of mature solutions). Other places like application libraries--it might make sense.