A szolgáltatás gyors.

A is the Hungarian definite article, so here it means the.

• a szolgáltatás = the service
• Hungarian uses a before most consonant sounds.
• The form az is used before vowel sounds.

For example:

• a szolgáltatás = the service
• az autó = the car

So in this sentence, a is just the normal definite article.

In Hungarian, in the present tense, third person singular or plural, the verb to be is often omitted when the sentence has the structure X is Y.

So:

• A szolgáltatás gyors. = The service is fast.

There is no separate word for is here, even though English requires it.

Compare:

• Én gyors vagyok. = I am fast.
• Te gyors vagy. = You are fast.
• A szolgáltatás gyors. = The service is fast.

So Hungarian keeps the verb in I am / you are, but usually leaves it out in he/she/it is type sentences in the present tense.

Szolgáltatás means service in the sense of a service provided by a company, organization, system, etc.

It is a very common and useful word in modern Hungarian, especially in contexts like:

• customer service
• internet service
• banking services
• public services

Examples:

• jó szolgáltatás = good service
• online szolgáltatás = online service
• a szolgáltatás drága = the service is expensive

It is a neutral, standard word.

A few key pronunciation points:

• sz is pronounced like English s in see
• s by itself is pronounced like English sh
• gy is a soft consonant, somewhat like the dy in during for many English speakers, though not exactly
• á is a long vowel, longer and more open than a
• Stress in Hungarian is always on the first syllable

So roughly:

• szolgáltatás ≈ SOL-gaal-taa-sh
• gyors ≈ something like dyorsh

Also note:

• the final s in gyors sounds like sh, because Hungarian s = English sh

Because gyors is the predicate adjective here: The service is fast.

Hungarian often uses this pattern:

• A szolgáltatás gyors.
• literally: The service fast.

When an adjective directly describes a noun inside a noun phrase, it usually goes before the noun:

• a gyors szolgáltatás = the fast service

So compare:

• a gyors szolgáltatás = the fast service
• a szolgáltatás gyors = the service is fast

That difference is very important.

Yes. Gyors a szolgáltatás. is also correct.

The difference is mainly focus or emphasis:

• A szolgáltatás gyors. = neutral statement
• Gyors a szolgáltatás. = emphasis on fast; something like The service is fast or The service is indeed fast

Hungarian word order is more flexible than English, and moving words often changes emphasis rather than basic meaning.

No. Hungarian does not have grammatical gender like English he/she distinctions in nouns, and adjectives do not change for masculine/feminine/neuter.

So gyors stays the same regardless of what noun it describes.

Examples:

• a szolgáltatás gyors = the service is fast
• az autó gyors = the car is fast
• a lány gyors = the girl is fast
• a fiú gyors = the boy is fast

No gender agreement is needed.

Yes, in a predicate like this, the adjective usually becomes plural.

For example:

• A szolgáltatás gyors. = The service is fast.
• A szolgáltatások gyorsak. = The services are fast.

Notice two changes:

• szolgáltatás → szolgáltatások = service → services
• gyors → gyorsak = plural predicate adjective

This is worth noticing because Hungarian handles plural adjectives differently depending on the structure.

Compare:

• gyors szolgáltatások = fast services
  Here the adjective stays gyors
• A szolgáltatások gyorsak. = The services are fast
  Here the adjective becomes gyorsak

You add nem before the adjective:

• A szolgáltatás nem gyors. = The service is not fast.

This is the normal way to negate this kind of sentence.

Pattern:

• A szolgáltatás gyors. = The service is fast.
• A szolgáltatás nem gyors. = The service is not fast.

In speech, you can often make it a question just with intonation:

• A szolgáltatás gyors? = Is the service fast?

In writing, the question mark shows it clearly.

Hungarian does not require changing the word order the way English does. You usually do not need to add a separate word for is here.

It is neutral and completely standard. It would sound natural in many situations, such as:

• talking about a company's service
• reviewing an app or website
• describing customer support or delivery

It is neither especially formal nor especially casual. It is just a normal, correct Hungarian sentence.