a priori proposition: a proposition whose
justiﬁcation does not rely upon experience
a posteriori proposition: a proposition whose
justiﬁcation does rely upon experience
High Clouds (+6km)
• Cirrus: Thin feather-like crystal clouds.
• Cirrocumulus: Thin clouds that appear as small "cotton patches."
• Cirrostratus: Thin white clouds that resemble veils.
Middle Clouds (+3km)
• Altocumulus: Gray or white layer or patches of solid clouds with rounded shapes.
• Altostratus: Grayish or bluish layer of clouds that can obscure the Sun.
• Stratus: Thin, gray sheet-like clouds with low bases; may bring drizzle and snow.
• Stratocumulus: Rounded cloud masses that form on top of a layer.
• Nimbostratus: Dark, gray shapeless cloud layers containing rain, snow, and ice
Clouds with Vertical Development
• Cumulus: Fair-weather clouds with ﬂat bases and domeshaped tops.
• Cumulonimbus: Large, dark, vertical clouds with bulging tops that bring showers,
thunder, and lightning.
Cloud computing is a style of computing in which dynamically
scalable and often virtualized resources are provided as a service
over the Internet. Users need not have knowledge of, expertise in, or
control over the technology infrastructure in the "cloud" that
Things to remember
• The term cloud computing isn’t very
meaningful, but this doesn’t mean it’s
• Mastering a technology is hardly about
knowing how to use it, but much more
about knowing when not to use it.
What did we learn?
• Terminology used in AWS
• Tips and tricks