Amazon Web Services will cut several hundred jobs in its Sales, Marketing, and Global Services organization, and a few hundred jobs on its Physical Stores Technology team, executives in the tech giant’s cloud computing division informed employees Wednesday morning in internal emails.

In the Sales, Marketing, and Global Services organization, most of the cuts are in training and certification, and sales operations. The company said it’s shifting its focus to self-serve digital training and training programs run by external partners.

AWS also cited overlap in some program management and sales operations roles.

“We do not take these decisions lightly, and I know change can be difficult,” wrote Matt Garman, AWS senior vice president. “We operate in an incredibly fast-moving industry, and it is important that we stay agile as an organization.”